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<div class="vector-toc-text"> 2.2 Crime solving </div> </a> <ul id="toc-Crime_solving-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Body_worn" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Body_worn"> <div class="vector-toc-text"> 2.3 Body worn </div> </a> <ul id="toc-Body_worn-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Traffic_flow_monitoring" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Traffic_flow_monitoring"> <div class="vector-toc-text"> 2.4 Traffic flow monitoring </div> </a> <ul id="toc-Traffic_flow_monitoring-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vehicle_traffic" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Vehicle_traffic"> <div class="vector-toc-text"> 2.5 Vehicle traffic </div> </a> <ul id="toc-Vehicle_traffic-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Pedestrian_traffic" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Pedestrian_traffic"> <div class="vector-toc-text"> 2.6 Pedestrian traffic </div> </a> <ul id="toc-Pedestrian_traffic-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Management_of_infection" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Management_of_infection"> <div class="vector-toc-text"> 2.7 Management of infection </div> </a> <ul id="toc-Management_of_infection-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Increasing_safety_and_security_in_public_transport" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Increasing_safety_and_security_in_public_transport"> <div class="vector-toc-text"> 2.8 Increasing safety and security in public transport </div> </a> <ul id="toc-Increasing_safety_and_security_in_public_transport-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sporting_events" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sporting_events"> <div class="vector-toc-text"> 2.9 Sporting events </div> </a> <ul id="toc-Sporting_events-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Employee_monitoring" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Employee_monitoring"> <div class="vector-toc-text"> 2.10 Employee monitoring </div> </a> <ul id="toc-Employee_monitoring-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Use_in_schools" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Use_in_schools"> <div class="vector-toc-text"> 2.11 Use in schools </div> </a> <ul id="toc-Use_in_schools-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Use_in_private_homes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Use_in_private_homes"> <div class="vector-toc-text"> 2.12 Use in private homes </div> </a> <ul id="toc-Use_in_private_homes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Criminal_use" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Criminal_use"> <div class="vector-toc-text"> 2.13 Criminal use </div> </a> <ul id="toc-Criminal_use-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Use_in_shopping_malls_and_retail_stores" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Use_in_shopping_malls_and_retail_stores"> <div class="vector-toc-text"> 2.14 Use in shopping malls and retail stores </div> </a> <ul id="toc-Use_in_shopping_malls_and_retail_stores-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Counter-terrorism" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Counter-terrorism"> <div class="vector-toc-text"> 2.15 Counter-terrorism </div> </a> <ul id="toc-Counter-terrorism-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Prevalence" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Prevalence"> <div class="vector-toc-text"> 3 Prevalence </div> </a> <button aria-controls="toc-Prevalence-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Prevalence subsection </button> <ul id="toc-Prevalence-sublist" class="vector-toc-list"> <li id="toc-Asia" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Asia"> <div class="vector-toc-text"> 3.1 Asia </div> </a> <ul id="toc-Asia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-United_States" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#United_States"> <div class="vector-toc-text"> 3.2 United States </div> </a> <ul id="toc-United_States-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-United_Kingdom" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#United_Kingdom"> <div class="vector-toc-text"> 3.3 United Kingdom </div> </a> <ul id="toc-United_Kingdom-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Canada" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Canada"> <div class="vector-toc-text"> 3.4 Canada </div> </a> <ul id="toc-Canada-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-South_Africa" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#South_Africa"> <div class="vector-toc-text"> 3.5 South Africa </div> </a> <ul id="toc-South_Africa-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Latin_America" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Latin_America"> <div class="vector-toc-text"> 3.6 Latin America </div> </a> <ul id="toc-Latin_America-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Russia" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Russia"> <div class="vector-toc-text"> 3.7 Russia </div> </a> <ul id="toc-Russia-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Privacy" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Privacy"> <div class="vector-toc-text"> 4 Privacy </div> </a> <ul id="toc-Privacy-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Technological_developments" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Technological_developments"> <div class="vector-toc-text"> 5 Technological developments </div> </a> <button aria-controls="toc-Technological_developments-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Technological developments subsection </button> <ul id="toc-Technological_developments-sublist" class="vector-toc-list"> <li id="toc-Computer-controlled_analytics_and_identification" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Computer-controlled_analytics_and_identification"> <div class="vector-toc-text"> 5.1 Computer-controlled analytics and identification </div> </a> <ul id="toc-Computer-controlled_analytics_and_identification-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Retention,_storage_and_preservation" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Retention,_storage_and_preservation"> <div class="vector-toc-text"> 5.2 Retention, storage and preservation </div> </a> <ul id="toc-Retention,_storage_and_preservation-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-IP_cameras" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#IP_cameras"> <div class="vector-toc-text"> 5.3 IP cameras </div> </a> <ul id="toc-IP_cameras-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Networking_CCTV_cameras" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Networking_CCTV_cameras"> <div class="vector-toc-text"> 5.4 Networking CCTV cameras </div> </a> <ul id="toc-Networking_CCTV_cameras-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Wireless_security_cameras" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Wireless_security_cameras"> <div class="vector-toc-text"> 5.5 Wireless security cameras </div> </a> <ul id="toc-Wireless_security_cameras-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Talking_CCTV" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Talking_CCTV"> <div class="vector-toc-text"> 5.6 Talking CCTV </div> </a> <ul id="toc-Talking_CCTV-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Countermeasures" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Countermeasures"> <div class="vector-toc-text"> 6 Countermeasures </div> </a> <ul id="toc-Countermeasures-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> 7 See also </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> 8 References </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Further_reading" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Further_reading"> <div class="vector-toc-text"> 9 Further reading </div> </a> <ul id="toc-Further_reading-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> 10 External links </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" > Toggle the table of contents </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading">Closed-circuit television</h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 55 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-55" aria-hidden="true" > 55 languages </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AF%D8%A7%D8%A6%D8%B1%D8%A9_%D8%AA%D9%84%D9%81%D8%B2%D9%8A%D9%88%D9%86%D9%8A%D8%A9" title="دائرة تلفزيونية – Arabic" lang="ar" hreflang="ar" data-title="دائرة تلفزيونية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Circuitu_zarr%C3%A1u_de_televisi%C3%B3n" title="Circuitu zarráu de televisión – Asturian" lang="ast" hreflang="ast" data-title="Circuitu zarráu de televisión" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Qapal%C4%B1_d%C3%B6vriyy%C9%99li_televiziya" title="Qapalı dövriyyəli televiziya – Azerbaijani" lang="az" hreflang="az" data-title="Qapalı dövriyyəli televiziya" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target">Azərbaycanca</a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AD%E0%A6%BF%E0%A6%A1%E0%A6%BF%E0%A6%93_%E0%A6%A8%E0%A6%9C%E0%A6%B0%E0%A6%A6%E0%A6%BE%E0%A6%B0%E0%A6%BF" title="ভিডিও নজরদারি – Bangla" lang="bn" hreflang="bn" data-title="ভিডিও নজরদারি" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target">বাংলা</a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%92%D0%B8%D0%B4%D0%B5%D0%BE%D0%BD%D0%B0%D0%B1%D0%BB%D1%8E%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5" title="Видеонаблюдение – Bulgarian" lang="bg" hreflang="bg" data-title="Видеонаблюдение" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target">Български</a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Circuit_tancat_de_televisi%C3%B3" title="Circuit tancat de televisió – Catalan" lang="ca" hreflang="ca" data-title="Circuit tancat de televisió" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target">Català</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Kamerov%C3%BD_syst%C3%A9m" title="Kamerový systém – Czech" lang="cs" hreflang="cs" data-title="Kamerový systém" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Surveglianza_Video" title="Surveglianza Video – Corsican" lang="co" hreflang="co" data-title="Surveglianza Video" data-language-autonym="Corsu" data-language-local-name="Corsican" class="interlanguage-link-target">Corsu</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Teledu_cylch_cyfyng" title="Teledu cylch cyfyng – Welsh" lang="cy" hreflang="cy" data-title="Teledu cylch cyfyng" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Videooverv%C3%A5gning" title="Videoovervågning – Danish" lang="da" hreflang="da" data-title="Videoovervågning" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target">Dansk</a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Video%C3%BCberwachung" title="Videoüberwachung – German" lang="de" hreflang="de" data-title="Videoüberwachung" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Sisetelevisioon" title="Sisetelevisioon – Estonian" lang="et" hreflang="et" data-title="Sisetelevisioon" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9A%CE%BB%CE%B5%CE%B9%CF%83%CF%84%CF%8C_%CE%BA%CF%8D%CE%BA%CE%BB%CF%89%CE%BC%CE%B1_%CF%84%CE%B7%CE%BB%CE%B5%CF%8C%CF%81%CE%B1%CF%83%CE%B7%CF%82" title="Κλειστό κύκλωμα τηλεόρασης – Greek" lang="el" hreflang="el" data-title="Κλειστό κύκλωμα τηλεόρασης" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Circuito_cerrado_de_televisi%C3%B3n" title="Circuito cerrado de televisión – Spanish" lang="es" hreflang="es" data-title="Circuito cerrado de televisión" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D8%A7%D9%85%D8%A7%D9%86%D9%87_%D8%AA%D8%B5%D9%88%DB%8C%D8%B1%DB%8C_%D9%85%D8%AF%D8%A7%D8%B1%D8%A8%D8%B3%D8%AA%D9%87" title="سامانه تصویری مداربسته – Persian" lang="fa" hreflang="fa" data-title="سامانه تصویری مداربسته" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Vid%C3%A9osurveillance" title="Vidéosurveillance – French" lang="fr" hreflang="fr" data-title="Vidéosurveillance" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Teilif%C3%ADs_ciorcaid_iata" title="Teilifís ciorcaid iata – Irish" lang="ga" hreflang="ga" data-title="Teilifís ciorcaid iata" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target">Gaeilge</a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Circu%C3%ADto_pechado_de_televisi%C3%B3n" title="Circuíto pechado de televisión – Galician" lang="gl" hreflang="gl" data-title="Circuíto pechado de televisión" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target">Galego</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%8F%90%EC%87%84%ED%9A%8C%EB%A1%9C_%ED%85%94%EB%A0%88%EB%B9%84%EC%A0%84" title="폐쇄회로 텔레비전 – Korean" lang="ko" hreflang="ko" data-title="폐쇄회로 텔레비전" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Video_nadzor" title="Video nadzor – Croatian" lang="hr" hreflang="hr" data-title="Video nadzor" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target">Hrvatski</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kamera_Pengawas" title="Kamera Pengawas – Indonesian" lang="id" hreflang="id" data-title="Kamera Pengawas" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Eftirlit_me%C3%B0_myndav%C3%A9lum" title="Eftirlit með myndavélum – Icelandic" lang="is" hreflang="is" data-title="Eftirlit með myndavélum" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target">Íslenska</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Televisione_a_circuito_chiuso" title="Televisione a circuito chiuso – Italian" lang="it" hreflang="it" data-title="Televisione a circuito chiuso" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%98%D7%9C%D7%95%D7%95%D7%99%D7%96%D7%99%D7%94_%D7%91%D7%9E%D7%A2%D7%92%D7%9C_%D7%A1%D7%92%D7%95%D7%A8" title="טלוויזיה במעגל סגור – Hebrew" lang="he" hreflang="he" data-title="טלוויזיה במעגל סגור" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B8%E0%B2%82%E0%B2%B5%E0%B3%83%E0%B2%A4_%E0%B2%B8%E0%B2%82%E0%B2%9A%E0%B2%BE%E0%B2%B0%E0%B2%AE%E0%B2%BE%E0%B2%B0%E0%B3%8D%E0%B2%97%E0%B2%A6_%E0%B2%A6%E0%B3%82%E0%B2%B0%E0%B2%A6%E0%B2%B0%E0%B3%8D%E0%B2%B6%E0%B2%A8" title="ಸಂವೃತ ಸಂಚಾರಮಾರ್ಗದ ದೂರದರ್ಶನ – Kannada" lang="kn" hreflang="kn" data-title="ಸಂವೃತ ಸಂಚಾರಮಾರ್ಗದ ದೂರದರ್ಶನ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target">ಕನ್ನಡ</a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%95%E0%B5%8D%E0%B4%B2%E0%B5%8B%E0%B4%B8%E0%B5%8D%E0%B4%A1%E0%B5%8D_%E0%B4%B8%E0%B5%BC%E0%B4%95%E0%B5%8D%E0%B4%AF%E0%B5%82%E0%B4%9F%E0%B5%8D%E0%B4%9F%E0%B5%8D_%E0%B4%9F%E0%B5%86%E0%B4%B2%E0%B4%BF%E0%B4%B5%E0%B4%BF%E0%B4%B7%E0%B5%BB" title="ക്ലോസ്ഡ് സർക്യൂട്ട് ടെലിവിഷൻ – Malayalam" lang="ml" hreflang="ml" data-title="ക്ലോസ്ഡ് സർക്യൂട്ട് ടെലിവിഷൻ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target">മലയാളം</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Kamera_litar_tertutup" title="Kamera litar tertutup – Malay" lang="ms" hreflang="ms" data-title="Kamera litar tertutup" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%9C%E1%80%AF%E1%80%B6%E1%80%81%E1%80%BC%E1%80%AF%E1%80%B6%E1%80%9B%E1%80%B1%E1%80%B8_%E1%80%80%E1%80%84%E1%80%BA%E1%80%99%E1%80%9B%E1%80%AC" title="လုံခြုံရေး ကင်မရာ – Burmese" lang="my" hreflang="my" data-title="လုံခြုံရေး ကင်မရာ" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target">မြန်မာဘာသာ</a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Cameratoezicht" title="Cameratoezicht – Dutch" lang="nl" hreflang="nl" data-title="Cameratoezicht" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Kameraoverv%C3%A5king" title="Kameraovervåking – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Kameraovervåking" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Videokuzatuv" title="Videokuzatuv – Uzbek" lang="uz" hreflang="uz" data-title="Videokuzatuv" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target">Oʻzbekcha / ўзбекча</a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%AF_%D8%AA%DA%93%D9%84%DB%90_%D8%AF%D9%88%D8%B1%DB%90_%D8%AA%D9%84%D9%88%DB%8C%D8%B2%DB%8C%D9%88%D9%86%D9%8A_%D8%B3%DB%8C%D8%B3%D9%BC%D9%85" title="د تړلې دورې تلویزیوني سیسټم – Pashto" lang="ps" hreflang="ps" data-title="د تړلې دورې تلویزیوني سیسټم" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target">پښتو</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Telewizja_przemys%C5%82owa" title="Telewizja przemysłowa – Polish" lang="pl" hreflang="pl" data-title="Telewizja przemysłowa" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Circuito_fechado_de_televis%C3%A3o" title="Circuito fechado de televisão – Portuguese" lang="pt" hreflang="pt" data-title="Circuito fechado de televisão" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Supravegherea_video" title="Supravegherea video – Romanian" lang="ro" hreflang="ro" data-title="Supravegherea video" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D0%B8%D0%B4%D0%B5%D0%BE%D0%BD%D0%B0%D0%B1%D0%BB%D1%8E%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5" title="Видеонаблюдение – Russian" lang="ru" hreflang="ru" data-title="Видеонаблюдение" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Video_v%C3%ABzhgimi" title="Video vëzhgimi – Albanian" lang="sq" hreflang="sq" data-title="Video vëzhgimi" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target">Shqip</a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%83%E0%B6%82%E0%B7%80%E0%B7%98%E0%B6%AD_%E0%B6%B4%E0%B6%BB%E0%B7%92%E0%B6%B4%E0%B6%AE_%E0%B6%BB%E0%B7%96%E0%B6%B4%E0%B7%80%E0%B7%8F%E0%B7%84%E0%B7%92%E0%B6%B1%E0%B7%92%E0%B6%BA" title="සංවෘත පරිපථ රූපවාහිනිය – Sinhala" lang="si" hreflang="si" data-title="සංවෘත පරිපථ රූපවාහිනිය" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target">සිංහල</a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Closed-circuit_television" title="Closed-circuit television – Simple English" lang="en-simple" hreflang="en-simple" data-title="Closed-circuit television" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target">Simple English</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Priemyseln%C3%A1_telev%C3%ADzia" title="Priemyselná televízia – Slovak" lang="sk" hreflang="sk" data-title="Priemyselná televízia" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Video_nadzor" title="Video nadzor – Slovenian" lang="sl" hreflang="sl" data-title="Video nadzor" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%92%D0%B8%D0%B4%D0%B5%D0%BE-%D0%BD%D0%B0%D0%B4%D0%B7%D0%BE%D1%80" title="Видео-надзор – Serbian" lang="sr" hreflang="sr" data-title="Видео-надзор" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target">Српски / srpski</a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Video_nadzor" title="Video nadzor – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Video nadzor" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target">Srpskohrvatski / српскохрватски</a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Valvontakamera" title="Valvontakamera – Finnish" lang="fi" hreflang="fi" data-title="Valvontakamera" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Kamera%C3%B6vervakning" title="Kameraövervakning – Swedish" lang="sv" hreflang="sv" data-title="Kameraövervakning" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target">Svenska</a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AE%E0%AF%82%E0%AE%9F%E0%AE%BF%E0%AE%AF-%E0%AE%AE%E0%AE%BF%E0%AE%A9%E0%AF%8D%E0%AE%9A%E0%AF%81%E0%AE%B1%E0%AF%8D%E0%AE%B1%E0%AF%81_%E0%AE%A4%E0%AF%8A%E0%AE%B2%E0%AF%88%E0%AE%95%E0%AF%8D%E0%AE%95%E0%AE%BE%E0%AE%9F%E0%AF%8D%E0%AE%9A%E0%AE%BF" title="மூடிய-மின்சுற்று தொலைக்காட்சி – Tamil" lang="ta" hreflang="ta" data-title="மூடிய-மின்சுற்று தொலைக்காட்சி" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target">தமிழ்</a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%82%E0%B8%97%E0%B8%A3%E0%B8%97%E0%B8%B1%E0%B8%A8%E0%B8%99%E0%B9%8C%E0%B8%A7%E0%B8%87%E0%B8%88%E0%B8%A3%E0%B8%9B%E0%B8%B4%E0%B8%94" title="โทรทัศน์วงจรปิด – Thai" lang="th" hreflang="th" data-title="โทรทัศน์วงจรปิด" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target">ไทย</a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Kapal%C4%B1_devre_televizyon" title="Kapalı devre televizyon – Turkish" lang="tr" hreflang="tr" data-title="Kapalı devre televizyon" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target">Türkçe</a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D1%96%D0%B4%D0%B5%D0%BE%D1%81%D0%BF%D0%BE%D1%81%D1%82%D0%B5%D1%80%D0%B5%D0%B6%D0%B5%D0%BD%D0%BD%D1%8F" title="Відеоспостереження – Ukrainian" lang="uk" hreflang="uk" data-title="Відеоспостереження" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target">Українська</a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%B3%DB%8C_%D8%B3%DB%8C_%D9%B9%DB%8C_%D9%88%DB%8C" title="سی سی ٹی وی – Urdu" lang="ur" hreflang="ur" data-title="سی سی ٹی وی" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target">اردو</a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Camera_quan_s%C3%A1t" title="Camera quan sát – Vietnamese" lang="vi" hreflang="vi" data-title="Camera quan sát" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target">Tiếng Việt</a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Guigne-djin" title="Guigne-djin – Walloon" lang="wa" hreflang="wa" data-title="Guigne-djin" data-language-autonym="Walon" data-language-local-name="Walloon" class="interlanguage-link-target">Walon</a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E9%97%AD%E8%B7%AF%E7%94%B5%E8%A7%86" title="闭路电视 – Wu" lang="wuu" hreflang="wuu" data-title="闭路电视" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target">吴语</a></li><li 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i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"CCTV" redirects here. For the broadcasting company in China, see <a href="/wiki/China_Central_Television" title="China Central Television">China Central Television</a>. For other uses, see <a href="/wiki/CCTV_(disambiguation)" class="mw-disambig" title="CCTV (disambiguation)">CCTV (disambiguation)</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="/wiki/Closed_captioning" title="Closed captioning">Closed captioning</a>.</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Three_Surveillance_cameras.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Three_Surveillance_cameras.jpg/220px-Three_Surveillance_cameras.jpg" decoding="async" width="220" height="179" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Three_Surveillance_cameras.jpg/330px-Three_Surveillance_cameras.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Three_Surveillance_cameras.jpg/440px-Three_Surveillance_cameras.jpg 2x" data-file-width="1815" data-file-height="1475" /></a><figcaption>Surveillance cameras on the corner of a building</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:C%C3%A1mara_CCTV.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/C%C3%A1mara_CCTV.jpg/220px-C%C3%A1mara_CCTV.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/C%C3%A1mara_CCTV.jpg/330px-C%C3%A1mara_CCTV.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c1/C%C3%A1mara_CCTV.jpg/440px-C%C3%A1mara_CCTV.jpg 2x" data-file-width="4608" data-file-height="3456" /></a><figcaption>Surveillance camera in a residential community</figcaption></figure> Closed-circuit television (CCTV), also known as video surveillance,<a href="#cite_note-1">[1]</a><a href="#cite_note-2">[2]</a> is the use of <a href="/wiki/Closed-circuit_television_camera" title="Closed-circuit television camera">closed-circuit television cameras</a> to transmit a signal to a specific place, on a limited set of monitors. It differs from <a href="/wiki/Broadcast_television" class="mw-redirect" title="Broadcast television">broadcast television</a> in that the signal is not openly transmitted, though it may employ point-to-point, point-to-multipoint (P2MP), or <a href="/wiki/Mesh_networking" title="Mesh networking">mesh</a> wired or <a href="/wiki/Wireless" title="Wireless">wireless links</a>. Even though almost all video cameras fit this definition, the term is most often applied to those used for <a href="/wiki/Surveillance" title="Surveillance">surveillance</a> in areas that require additional security or ongoing monitoring (<a href="/wiki/Videotelephony" title="Videotelephony">videotelephony</a> is seldom called "CCTV"<a href="#cite_note-3">[3]</a><a href="#cite_note-4">[4]</a>). Surveillance of the public using CCTV is common in many areas around the world. Video surveillance has generated significant debate about balancing its use with individuals' <a href="/wiki/Right_to_privacy" title="Right to privacy">right to privacy</a> even when in public.<a href="#cite_note-5">[5]</a><a href="#cite_note-6">[6]</a><a href="#cite_note-7">[7]</a> In <a href="/wiki/Factory" title="Factory">industrial plants</a>, CCTV equipment may be used to observe parts of a process from a central <a href="/wiki/Control_room" title="Control room">control room</a>, especially if the environments observed are dangerous or inaccessible to humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, using <a href="/wiki/Digital_video_recorder" title="Digital video recorder">digital video recorders</a> (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as <a href="/wiki/Motion_detection" class="mw-redirect" title="Motion detection">motion detection</a> and email alerts). More recently, decentralized <a href="/wiki/IP_camera" title="IP camera">IP cameras</a>, perhaps equipped with megapixel sensors, support recording directly to <a href="/wiki/Network-attached_storage" title="Network-attached storage">network-attached storage</a> devices, or internal flash for completely stand-alone operation. The deployment of this technology has facilitated significant growth in state surveillance, a substantial rise in the methods of advanced social monitoring and control, and a host of crime prevention measures throughout the world.<a href="#cite_note-8">[8]</a> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=1" title="Edit section: History">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:THE_CENTRAL_POLICE_CONTROL_STATION,_MANNED_24_HOURS_A_DAY_CONTROLS_ALL_TRAFFIC_LIGHTS,_RECEIVES_REMOTE_TV_INPUTS_FROM..._-_NARA_-_551905.tif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/THE_CENTRAL_POLICE_CONTROL_STATION%2C_MANNED_24_HOURS_A_DAY_CONTROLS_ALL_TRAFFIC_LIGHTS%2C_RECEIVES_REMOTE_TV_INPUTS_FROM..._-_NARA_-_551905.tif/lossy-page1-220px-THE_CENTRAL_POLICE_CONTROL_STATION%2C_MANNED_24_HOURS_A_DAY_CONTROLS_ALL_TRAFFIC_LIGHTS%2C_RECEIVES_REMOTE_TV_INPUTS_FROM..._-_NARA_-_551905.tif.jpg" decoding="async" width="220" height="149" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/THE_CENTRAL_POLICE_CONTROL_STATION%2C_MANNED_24_HOURS_A_DAY_CONTROLS_ALL_TRAFFIC_LIGHTS%2C_RECEIVES_REMOTE_TV_INPUTS_FROM..._-_NARA_-_551905.tif/lossy-page1-330px-THE_CENTRAL_POLICE_CONTROL_STATION%2C_MANNED_24_HOURS_A_DAY_CONTROLS_ALL_TRAFFIC_LIGHTS%2C_RECEIVES_REMOTE_TV_INPUTS_FROM..._-_NARA_-_551905.tif.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/THE_CENTRAL_POLICE_CONTROL_STATION%2C_MANNED_24_HOURS_A_DAY_CONTROLS_ALL_TRAFFIC_LIGHTS%2C_RECEIVES_REMOTE_TV_INPUTS_FROM..._-_NARA_-_551905.tif/lossy-page1-440px-THE_CENTRAL_POLICE_CONTROL_STATION%2C_MANNED_24_HOURS_A_DAY_CONTROLS_ALL_TRAFFIC_LIGHTS%2C_RECEIVES_REMOTE_TV_INPUTS_FROM..._-_NARA_-_551905.tif.jpg 2x" data-file-width="3000" data-file-height="2033" /></a><figcaption>Closed circuit TV monitoring at the Central Police Control Station, Munich, Germany in 1973</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Cameratoezichtcentrale_politie_nederland.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Cameratoezichtcentrale_politie_nederland.jpg/220px-Cameratoezichtcentrale_politie_nederland.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Cameratoezichtcentrale_politie_nederland.jpg/330px-Cameratoezichtcentrale_politie_nederland.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/15/Cameratoezichtcentrale_politie_nederland.jpg/440px-Cameratoezichtcentrale_politie_nederland.jpg 2x" data-file-width="3264" data-file-height="2448" /></a><figcaption>Desk in one of the regional control-rooms of the National Police in the Netherlands in 2017</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:CCTV_control_room_monitor_wall.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/CCTV_control_room_monitor_wall.jpg/220px-CCTV_control_room_monitor_wall.jpg" decoding="async" width="220" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/86/CCTV_control_room_monitor_wall.jpg/330px-CCTV_control_room_monitor_wall.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/86/CCTV_control_room_monitor_wall.jpg/440px-CCTV_control_room_monitor_wall.jpg 2x" data-file-width="1217" data-file-height="500" /></a><figcaption>CCTV control-room monitor wall for 176 open-street cameras in 2017</figcaption></figure> An early <a href="/wiki/Mechanical_television" title="Mechanical television">mechanical</a> CCTV system was developed in June 1927 by Russian physicist <a href="/wiki/L%C3%A9on_Theremin" class="mw-redirect" title="Léon Theremin">Léon Theremin</a><a href="#cite_note-:0-9">[9]</a> (cf. <a href="/wiki/Television_in_the_Soviet_Union" title="Television in the Soviet Union">Television in the Soviet Union</a>). Originally requested by CTO (the Soviet <a href="/wiki/Council_of_Labor_and_Defense" title="Council of Labor and Defense">Council of Labor and Defense</a>), the system consisted of a manually-operated scanning-transmitting camera and wireless shortwave transmitter and receiver, with a resolution of a hundred lines. Having been commandeered by <a href="/wiki/Kliment_Voroshilov" title="Kliment Voroshilov">Kliment Voroshilov</a>, Theremin's CCTV system was demonstrated to <a href="/wiki/Joseph_Stalin" title="Joseph Stalin">Joseph Stalin</a>, <a href="/wiki/Semyon_Budyonny" title="Semyon Budyonny">Semyon Budyonny</a>, and <a href="/wiki/Sergo_Ordzhonikidze" title="Sergo Ordzhonikidze">Sergo Ordzhonikidze</a>, and subsequently installed in the courtyard of the <a href="/wiki/Moscow_Kremlin" class="mw-redirect" title="Moscow Kremlin">Moscow Kremlin</a> to monitor approaching visitors.<a href="#cite_note-:0-9">[9]</a> Another early CCTV system was installed by <a href="/wiki/Siemens" title="Siemens">Siemens AG</a> at <a href="/wiki/Test_Stand_VII" title="Test Stand VII">Test Stand VII</a> in <a href="/wiki/Peenem%C3%BCnde" title="Peenemünde">Peenemünde</a>, Nazi Germany in 1942, for observing the launch of <a href="/wiki/V-2_rocket" title="V-2 rocket">V-2 rockets</a>.<a href="#cite_note-dornberger-10">[10]</a> In the United States, the first commercial closed-circuit television system became available in 1949 from <a href="/wiki/Remington_Rand" title="Remington Rand">Remington Rand</a> and designed by <a href="/wiki/CBS_Laboratories" title="CBS Laboratories">CBS Laboratories</a>, called "Vericon".<a href="#cite_note-11">[11]</a> Vericon was advertised as not requiring a government permit, due to the system using cabled connections between camera and monitor rather than over-the-air transmission.<a href="#cite_note-12">[12]</a> <div class="mw-heading mw-heading3"><h3 id="Technology">Technology</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=2" title="Edit section: Technology">edit</a>]</div> The earliest video surveillance systems involved constant monitoring because there was no way to record and store information. The development of reel-to-reel media enabled the recording of surveillance footage. These systems required magnetic tapes to be changed manually, which was a time-consuming, expensive and unreliable process, with the operator having to manually thread the tape from the tape reel through the recorder onto a take-up reel. Due to these shortcomings, video surveillance was not widespread. <a href="/wiki/VCR" class="mw-redirect" title="VCR">VCR</a> technology became available in the 1970s, making it easier to record and erase information, and the use of video surveillance became more common.<a href="#cite_note-13">[13]</a> During the 1990s, digital <a href="/wiki/Multiplexing" title="Multiplexing">multiplexing</a> was developed, allowing several cameras to record at once, as well as <a href="/wiki/Time_lapse_photography" class="mw-redirect" title="Time lapse photography">time lapse</a> and motion-only recording. This saved time and money which then led to an increase in the use of CCTV.<a href="#cite_note-wecusurveillance.com-14">[14]</a> Recently CCTV technology has been enhanced with a shift toward Internet-based products and systems, and other technological developments.<a href="#cite_note-15">[15]</a> <div class="mw-heading mw-heading3"><h3 id="Application">Application</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=3" title="Edit section: Application">edit</a>]</div> Early CCTV systems were installed in central London by the Metropolitan Police between 1960 and 1965.<a href="#cite_note-16">[16]</a> By 1963, CCTV was being used in Munich to monitor traffic.<a href="#cite_note-17">[17]</a> Closed-circuit television was used as a form of <a href="/wiki/Pay-per-view" title="Pay-per-view">pay-per-view</a> <a href="/wiki/Theatre_television" class="mw-redirect" title="Theatre television">theatre television</a> for sports such as <a href="/wiki/Professional_boxing" title="Professional boxing">professional boxing</a> and <a href="/wiki/Professional_wrestling" title="Professional wrestling">professional wrestling</a>, and from 1964 through 1970, the <a href="/wiki/Indianapolis_500" title="Indianapolis 500">Indianapolis 500</a> automobile race. Boxing telecasts were broadcast live to a select number of venues, mostly theaters, with arenas, stadiums, schools, and convention centers also being less often used venues, where viewers paid for tickets to watch the fight live.<a href="#cite_note-Ezra-18">[18]</a><a href="#cite_note-bloodyelbow-19">[19]</a> The first fight with a closed-circuit telecast was <a href="/wiki/Joe_Louis" title="Joe Louis">Joe Louis</a> vs. <a href="/wiki/Jersey_Joe_Walcott" title="Jersey Joe Walcott">Joe Walcott</a> in 1948.<a href="#cite_note-20">[20]</a> Closed-circuit telecasts peaked in popularity with <a href="/wiki/Muhammad_Ali" title="Muhammad Ali">Muhammad Ali</a> in the 1960s and 1970s,<a href="#cite_note-Ezra-18">[18]</a><a href="#cite_note-bloodyelbow-19">[19]</a> with "<a href="/wiki/The_Rumble_in_the_Jungle" title="The Rumble in the Jungle">The Rumble in the Jungle</a>" fight drawing 50 million CCTV viewers worldwide in 1974,<a href="#cite_note-21">[21]</a> and the "<a href="/wiki/Thrilla_in_Manila" title="Thrilla in Manila">Thrilla in Manila</a>" drawing 100 million CCTV viewers worldwide in 1975.<a href="#cite_note-22">[22]</a> In 1985, the <a href="/wiki/WrestleMania_I" title="WrestleMania I">WrestleMania I</a> professional wrestling show was seen by over one million viewers with this scheme.<a href="#cite_note-23">[23]</a> As late as 1996, the <a href="/wiki/Julio_C%C3%A9sar_Ch%C3%A1vez_vs._Oscar_De_La_Hoya" title="Julio César Chávez vs. Oscar De La Hoya">Julio César Chávez vs. Oscar De La Hoya</a> boxing fight had 750,000 viewers.<a href="#cite_note-24">[24]</a> Although closed-circuit television was gradually replaced by <a href="/wiki/Pay-per-view" title="Pay-per-view">pay-per-view</a> home <a href="/wiki/Cable_television" title="Cable television">cable television</a> in the 1980s and 1990s, it is still in use today for most awards shows and other events that are transmitted live to most venues but do not air as such on network television, and later re-edited for broadcast.<a href="#cite_note-bloodyelbow-19">[19]</a> In September 1968, <a href="/wiki/Olean,_New_York" title="Olean, New York">Olean, New York</a> was the first city in the United States to install CCTV video cameras along its main business street in an effort to fight crime.<a href="#cite_note-Robb,_Gary_C._1979_pg._571-602-25">[25]</a> <a href="/wiki/Marie_Van_Brittan_Brown" class="mw-redirect" title="Marie Van Brittan Brown">Marie Van Brittan Brown</a> received a patent for the design of a CCTV-based home security system in 1969. (<a rel="nofollow" class="external text" href="https://patents.google.com/patent/US3482037">U.S. patent 3,482,037</a>). Another early appearance was in 1973 in <a href="/wiki/Times_Square" title="Times Square">Times Square</a> in <a href="/wiki/New_York_City" title="New York City">New York City</a>.<a href="#cite_note-Yesil,_Bilge-26">[26]</a> The NYPD installed it to deter crime in the area; however, crime rates did not appear to drop much due to the cameras.<a href="#cite_note-Yesil,_Bilge-26">[26]</a> Nevertheless, during the 1980s video surveillance began to spread across the country specifically targeting public areas.<a href="#cite_note-wecusurveillance.com-14">[14]</a> It was seen as a cheaper way to deter crime compared to increasing the size of the police departments.<a href="#cite_note-Yesil,_Bilge-26">[26]</a> Some businesses as well, especially those that were prone to theft, began to use video surveillance.<a href="#cite_note-Yesil,_Bilge-26">[26]</a> From the mid-1990s on, police departments across the country installed an increasing number of cameras in various public spaces including housing projects, schools and public parks.<a href="#cite_note-Yesil,_Bilge-26">[26]</a> CCTV later became common in banks and stores to discourage theft, by recording evidence of criminal activity. In 1997, 3,100 CCTV systems were installed in public housing and residential areas in New York City.<a href="#cite_note-27">[27]</a> Experiments in the UK during the 1970s and 1980s, including outdoor CCTV in <a href="/wiki/Bournemouth" title="Bournemouth">Bournemouth</a> in 1985, led to several larger trial programs later that decade. The first use by local government was in <a href="/wiki/King%27s_Lynn" title="King's Lynn">King's Lynn</a>, Norfolk, in 1987.<a href="#cite_note-wndc-28">[28]</a> <div class="mw-heading mw-heading2"><h2 id="Uses">Uses</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=4" title="Edit section: Uses">edit</a>]</div> <div class="mw-heading mw-heading3"><h3 id="Crime_prevention">Crime prevention</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=5" title="Edit section: Crime prevention">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Bulger_cctv.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/6/62/Bulger_cctv.jpg" decoding="async" width="150" height="180" class="mw-file-element" data-file-width="150" data-file-height="180" /></a><figcaption>The two-year-old <a href="/wiki/Murder_of_James_Bulger" title="Murder of James Bulger">James Bulger</a> being led away by his killers, recorded on shopping centre CCTV in 1993; this <a href="/wiki/Narrow-bandwidth_television" title="Narrow-bandwidth television">narrow-bandwidth television</a> system had a low <a href="/wiki/Frame_rate" title="Frame rate">frame rate</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Video_surveillance_sign.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Video_surveillance_sign.jpg/220px-Video_surveillance_sign.jpg" decoding="async" width="220" height="222" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Video_surveillance_sign.jpg/330px-Video_surveillance_sign.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/47/Video_surveillance_sign.jpg/440px-Video_surveillance_sign.jpg 2x" data-file-width="534" data-file-height="538" /></a><figcaption>Sign warning that premises are watched by CCTV cameras</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Crime_prevention" title="Crime prevention">crime prevention</a> and <a href="/wiki/Predictive_policing" title="Predictive policing">predictive policing</a></div> A 2009 systematic review by researchers from <a href="/wiki/Northeastern_University" title="Northeastern University">Northeastern University</a> and <a href="/wiki/University_of_Cambridge" title="University of Cambridge">University of Cambridge</a> used <a href="/wiki/Meta-analysis" title="Meta-analysis">meta-analytic</a> techniques to pool the average effect of CCTV on crime across 41 different studies.<a href="#cite_note-Public-29">[29]</a> The studies included in the meta-analysis used <a href="/wiki/Quasi-experiment" title="Quasi-experiment">quasi-experimental evaluation designs</a> that involve before-and-after measures of crime in experimental and control areas.<a href="#cite_note-Public-29">[29]</a> However, several researchers have pointed to methodological problems associated with this research literature. First, researchers have argued that the British car park studies included in the meta-analysis cannot accurately control for the fact that CCTV was introduced simultaneously with a range of other security-related measures.<a href="#cite_note-30">[30]</a> Second, some have noted that, in many of the studies, there may be issues with <a href="/wiki/Selection_bias" title="Selection bias">selection bias</a> since the introduction of CCTV was potentially <a href="/wiki/Endogeneity_(econometrics)" title="Endogeneity (econometrics)">endogenous</a> to previous crime trends.<a href="#cite_note-31">[31]</a> In particular, the estimated effects may be biased if CCTV is introduced in response to crime trends.<a href="#cite_note-32">[32]</a> It has been argued that problems of selection bias and endogeneity can be addressed by stronger research designs such as <a href="/wiki/Randomized_controlled_trials" class="mw-redirect" title="Randomized controlled trials">randomized controlled trials</a> and <a href="/wiki/Natural_experiments" class="mw-redirect" title="Natural experiments">natural experiments</a>. A 2017 review published in <a href="/wiki/Journal_of_Scandinavian_Studies_in_Criminology_and_Crime_Prevention" class="mw-redirect" title="Journal of Scandinavian Studies in Criminology and Crime Prevention">Journal of Scandinavian Studies in Criminology and Crime Prevention</a> compiles seven studies that use such research designs. The studies included in the review found that CCTV reduced crime by 24–28% in public streets and urban subway stations. It also found that CCTV could decrease unruly behaviour in football stadiums and theft in supermarkets/mass merchant stores. However, there was no evidence of CCTV having desirable effects in parking facilities or suburban subway stations. Furthermore, the review indicates that CCTV is more effective in preventing property crimes than in violent crimes.<a href="#cite_note-33">[33]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Alexis_Navy_Yard_012_1dsLQLVk7nY.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/78/Alexis_Navy_Yard_012_1dsLQLVk7nY.jpg/220px-Alexis_Navy_Yard_012_1dsLQLVk7nY.jpg" decoding="async" width="220" height="149" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/78/Alexis_Navy_Yard_012_1dsLQLVk7nY.jpg/330px-Alexis_Navy_Yard_012_1dsLQLVk7nY.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/78/Alexis_Navy_Yard_012_1dsLQLVk7nY.jpg/440px-Alexis_Navy_Yard_012_1dsLQLVk7nY.jpg 2x" data-file-width="698" data-file-height="472" /></a><figcaption>Closed circuit television cameras captured the perpetrator of the <a href="/wiki/Washington_Navy_Yard_shooting" title="Washington Navy Yard shooting">Washington Navy Yard shooting</a>, Aaron Alexis, during his rampage</figcaption></figure> Another question in the effectiveness of CCTV for policing is around uptime of the system; in 2013 City of Philadelphia Auditor found that the $15M system was operational only 32% of the time.<a href="#cite_note-34">[34]</a> There is strong anecdotal evidence that CCTV aids in detection and conviction of offenders; for example, UK police forces routinely seek CCTV recordings after crimes.<a href="#cite_note-35">[35]</a> Moreover, CCTV has played a crucial role in tracing the movements of suspects or victims and is widely regarded by anti-terrorist officers as a fundamental tool in tracking terrorist suspects. Large-scale CCTV installations have played a key part of the defenses against terrorism since the 1970s. Cameras have also been installed on <a href="/wiki/Public_transport" title="Public transport">public transport</a> in the hope of deterring crime.<a href="#cite_note-36">[36]</a><a href="#cite_note-37">[37]</a> A more open question is whether most CCTV is cost-effective. While low-quality domestic kits are cheap, the professional installation and maintenance of high definition CCTV is expensive.<a href="#cite_note-38">[38]</a> Gill and Spriggs did a <a href="/wiki/Cost-effectiveness_analysis" title="Cost-effectiveness analysis">Cost-effectiveness analysis</a> (CEA) of CCTV in crime prevention that showed little monetary saving with the installation of CCTV as most of the crimes prevented resulted in little monetary loss.<a href="#cite_note-Assessing-39">[39]</a> Critics however noted that benefits of non-monetary value cannot be captured in a traditional Cost Effectiveness Analysis and were omitted from their study.<a href="#cite_note-Assessing-39">[39]</a> A 2008 Report by UK Police Chiefs concluded that only 3% of crimes were solved by CCTV.<a href="#cite_note-40">[40]</a> In London, a <a href="/wiki/Metropolitan_Police" title="Metropolitan Police">Metropolitan Police</a> report showed that in 2008 only one crime was solved per 1000 cameras.<a href="#cite_note-41">[41]</a> In some cases CCTV cameras have become a target of attacks themselves.<a href="#cite_note-42">[42]</a> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Omar_Habhan_Westgate_attack.webp" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/a/a0/Omar_Habhan_Westgate_attack.webp/235px-Omar_Habhan_Westgate_attack.webp.png" decoding="async" width="235" height="177" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/a/a0/Omar_Habhan_Westgate_attack.webp/353px-Omar_Habhan_Westgate_attack.webp.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/a/a0/Omar_Habhan_Westgate_attack.webp/470px-Omar_Habhan_Westgate_attack.webp.png 2x" data-file-width="638" data-file-height="480" /></a><figcaption><a href="/wiki/Omar_Nabhan" title="Omar Nabhan">Omar Nabhan</a>, as seen on CCTV during the <a href="/wiki/Westgate_shopping_mall_attack" title="Westgate shopping mall attack">Westgate shopping mall attack</a> that resulted in the deaths of 71 people. Authorities observed the attack via the cameras within the mall.</figcaption></figure> Cities such as Manchester in the UK are using <a href="/wiki/Digital_video_recorder" title="Digital video recorder">DVR</a>-based technology to improve accessibility for crime prevention.<a href="#cite_note-43">[43]</a> In October 2009, an "Internet Eyes" website was announced which would pay members of the public to view CCTV camera images from their homes and report any crimes they witnessed. The site aimed to add "more eyes" to cameras which might be insufficiently monitored. Civil liberties campaigners criticized the idea as "a distasteful and a worrying development".<a href="#cite_note-44">[44]</a> In 2013 <a href="/wiki/Oaxaca" title="Oaxaca">Oaxaca</a> hired deaf police officers to <a href="/wiki/Lip_reading" title="Lip reading">lip read</a> conversations to uncover criminal conspiracies.<a href="#cite_note-45">[45]</a> In Singapore, since 2012, thousands of CCTV cameras have helped deter loan sharks, nab litterbugs, and stop illegal parking, according to government figures.<a href="#cite_note-46">[46]</a> Russia has implemented a video surveillance system called 'Safe City', which has the capability to recognize facial features and moving objects, sending the data automatically to government authorities. However, the widespread tracking of individuals through video surveillance has raised significant privacy issues.<a href="#cite_note-47">[47]</a> <div class="mw-heading mw-heading3"><h3 id="Crime_solving">Crime solving</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=6" title="Edit section: Crime solving">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Criminal_investigation" title="Criminal investigation">Criminal investigation</a></div> CCTV can also be used to help solve crimes. In London alone, six crimes are solved each day on average using CCTV footage.<a href="#cite_note-48">[48]</a> <div class="mw-heading mw-heading3"><h3 id="Body_worn">Body worn</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=7" title="Edit section: Body worn">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Body_worn_video" class="mw-redirect" title="Body worn video">Body worn video</a></div> In recent years, the use of <a href="/wiki/Body_worn_video" class="mw-redirect" title="Body worn video">body worn video</a> cameras has been introduced for a number of uses. For example, as a new form of surveillance in law enforcement, with cameras located on a police officer's chest or head.<a href="#cite_note-49">[49]</a><a href="#cite_note-Hung-50">[50]</a> <div class="mw-heading mw-heading3"><h3 id="Traffic_flow_monitoring">Traffic flow monitoring</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=8" title="Edit section: Traffic flow monitoring">edit</a>]</div> <div class="mw-heading mw-heading3"><h3 id="Vehicle_traffic">Vehicle traffic</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=9" title="Edit section: Vehicle traffic">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Traffic_camera" title="Traffic camera">Traffic camera</a></div> Many cities and <a href="/wiki/Motorway" class="mw-redirect" title="Motorway">motorway</a> networks have extensive traffic-monitoring systems, using closed-circuit television to detect congestion and notice accidents.<a href="#cite_note-51">[51]</a>[<a href="/wiki/Wikipedia:Reliable_sources" title="Wikipedia:Reliable sources">unreliable source?</a>] Many of these cameras however, are owned by private companies and transmit data to drivers' <a href="/wiki/GPS" class="mw-redirect" title="GPS">GPS</a> systems. <a href="/wiki/Highways_England" class="mw-redirect" title="Highways England">Highways England</a> has a publicly owned CCTV network of over 3000 Pan-Tilt-Zoom cameras covering the British motorway and trunk road network. These cameras are primarily used to monitor traffic conditions and are not used as <a href="/wiki/Speed_cameras" class="mw-redirect" title="Speed cameras">speed cameras</a>. With the addition of fixed cameras for the <a href="/wiki/Active_traffic_management" title="Active traffic management">active traffic management</a> system, the number of cameras on the Highways England's CCTV network is likely to increase significantly over the next few years.<a href="#cite_note-52">[52]</a> The <a href="/wiki/London_congestion_charge" title="London congestion charge">London congestion charge</a> is enforced by cameras positioned at the boundaries of and inside the congestion charge zone, which automatically read the number plates of vehicles that enter the zone. If the driver does not pay the charge then a fine will be imposed.<a href="#cite_note-53">[53]</a> Similar systems are being developed as a means of locating cars reported stolen.<a href="#cite_note-54">[54]</a> Other surveillance cameras serve as <a href="/wiki/Traffic_enforcement_camera" title="Traffic enforcement camera">traffic enforcement cameras</a>.<a href="#cite_note-55">[55]</a> <div class="mw-heading mw-heading3"><h3 id="Pedestrian_traffic">Pedestrian traffic</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=10" title="Edit section: Pedestrian traffic">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:CCTV_dome_camera_subway_Rotterdam.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/CCTV_dome_camera_subway_Rotterdam.jpg/170px-CCTV_dome_camera_subway_Rotterdam.jpg" decoding="async" width="170" height="226" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/CCTV_dome_camera_subway_Rotterdam.jpg/255px-CCTV_dome_camera_subway_Rotterdam.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d6/CCTV_dome_camera_subway_Rotterdam.jpg/340px-CCTV_dome_camera_subway_Rotterdam.jpg 2x" data-file-width="1952" data-file-height="2592" /></a><figcaption>Dome camera in <a href="/wiki/Rotterdam_Centraal_station" title="Rotterdam Centraal station">Rotterdam central metro station</a></figcaption></figure> In <a href="/wiki/Mecca" title="Mecca">Mecca</a>, CCTV cameras are used for monitoring (and thus <a href="/wiki/Crowd_control" title="Crowd control">managing</a>) the flow of crowds.<a href="#cite_note-56">[56]</a> In the Philippines, barangay San Antonio used CCTV cameras and artificial intelligence software to detect the <a href="/wiki/Social_distancing" title="Social distancing">formation of crowds</a> during an <a href="/wiki/Disease_outbreak" title="Disease outbreak">outbreak of a disease</a>. Security personnel were sent whenever a crowd formed at a particular location in the city.<a href="#cite_note-57">[57]</a><a href="#cite_note-58">[58]</a><a href="#cite_note-59">[59]</a><a href="#cite_note-60">[60]</a> <div class="mw-heading mw-heading3"><h3 id="Management_of_infection">Management of infection</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=11" title="Edit section: Management of infection">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Government_by_algorithm#Management_of_infection" title="Government by algorithm">Government by algorithm § Management of infection</a></div> <div class="mw-heading mw-heading3"><h3 id="Increasing_safety_and_security_in_public_transport">Increasing safety and security in public transport</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=12" title="Edit section: Increasing safety and security in public transport">edit</a>]</div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:SISS_VPU3400_8-channel_20080502.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/SISS_VPU3400_8-channel_20080502.jpg/220px-SISS_VPU3400_8-channel_20080502.jpg" decoding="async" width="220" height="91" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/SISS_VPU3400_8-channel_20080502.jpg/330px-SISS_VPU3400_8-channel_20080502.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9b/SISS_VPU3400_8-channel_20080502.jpg/440px-SISS_VPU3400_8-channel_20080502.jpg 2x" data-file-width="1274" data-file-height="528" /></a><figcaption>Digital Video Recorder for Public Transport</figcaption></figure> On a <a href="/wiki/One-man_operation" class="mw-redirect" title="One-man operation">driver-only operated</a> train CCTV cameras may allow the driver to confirm that people are clear of doors before closing them and starting the train.<a href="#cite_note-61">[61]</a> A trial by <a href="/wiki/Rotterdamse_Elektrische_Tram" title="Rotterdamse Elektrische Tram">RET</a> in 2011 with <a href="/wiki/Facial_recognition_system" title="Facial recognition system">facial recognition</a> cameras mounted on trams made sure that people who were banned from them did not sneak on anyway.<a href="#cite_note-62">[62]</a> <div class="mw-heading mw-heading3"><h3 id="Sporting_events">Sporting events</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=13" title="Edit section: Sporting events">edit</a>]</div> Many sporting events in the United States use CCTV inside the venue, either to display on the stadium or arena's <a href="/wiki/Scoreboard" title="Scoreboard">scoreboard</a>, or in the concourse or restroom areas to allow fans to view action outside the seating bowl. The cameras send the feed to a central control center where a producer selects feeds to send to the television monitors that fans can view. CCTV monitors for viewing the event by attendees are often placed in lounges, hallways, and restrooms. In a trial with CCTV cameras, football club fans no longer needed to identify themselves manually, but could pass freely after being authorized by the facial recognition system.<a href="#cite_note-63">[63]</a> <div class="mw-heading mw-heading3"><h3 id="Employee_monitoring">Employee monitoring</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=14" title="Edit section: Employee monitoring">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Employee_monitoring" title="Employee monitoring">Employee monitoring</a></div> Organizations use CCTV to monitor the actions of workers. Every action is recorded as an information block with subtitles that explain the performed operation. This helps to track the actions of workers, especially when they are making critical financial transactions, such as correcting or cancelling of a sale, withdrawing money, or altering personal information. Actions which an employer may wish to monitor could include: <ul><li>Scanning of goods, selection of goods, introduction of price and quantity;</li> <li>Input and output of operators in the system when entering passwords;</li> <li>Deleting operations and modifying existing documents;</li> <li>Implementation of certain operations, such as financial statements or operations with cash;</li> <li>Moving goods, revaluation scrapping and counting;</li> <li>Control in the kitchen of fast food restaurants;</li> <li>Change of settings, reports and other official functions.</li></ul> Each of these operations is transmitted with a description, allowing detailed monitoring of all actions of the operator. Some systems allow the user to search for a specific event by time of occurrence and text description, and perform statistical evaluation of operator behaviour. This allows the software to predict deviations from the standard workflow and record only anomalous behaviour.<a href="#cite_note-64">[64]</a> <div class="mw-heading mw-heading3"><h3 id="Use_in_schools">Use in schools</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=15" title="Edit section: Use in schools">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Video_surveillance_in_schools" class="mw-redirect" title="Video surveillance in schools">Video surveillance in schools</a></div> <figure class="mw-halign-left" typeof="mw:File/Thumb"><video id="mwe_player_0" poster="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Andover_Tornado_CCTV.webm/250px--Andover_Tornado_CCTV.webm.jpg" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="250" height="142" data-durationhint="48" data-mwtitle="Andover_Tornado_CCTV.webm" data-mwprovider="wikimediacommons" resource="/wiki/File:Andover_Tornado_CCTV.webm"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/e/ee/Andover_Tornado_CCTV.webm/Andover_Tornado_CCTV.webm.480p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="480p.vp9.webm" data-width="842" data-height="480" /><source src="//upload.wikimedia.org/wikipedia/commons/e/ee/Andover_Tornado_CCTV.webm" type="video/webm; codecs="vp9, opus"" data-width="1558" data-height="888" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/e/ee/Andover_Tornado_CCTV.webm/Andover_Tornado_CCTV.webm.144p.mjpeg.mov" type="video/quicktime" data-transcodekey="144p.mjpeg.mov" data-width="252" data-height="144" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/e/ee/Andover_Tornado_CCTV.webm/Andover_Tornado_CCTV.webm.240p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="240p.vp9.webm" data-width="422" data-height="240" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/e/ee/Andover_Tornado_CCTV.webm/Andover_Tornado_CCTV.webm.360p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="360p.vp9.webm" data-width="632" data-height="360" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/e/ee/Andover_Tornado_CCTV.webm/Andover_Tornado_CCTV.webm.360p.webm" type="video/webm; codecs="vp8, vorbis"" data-transcodekey="360p.webm" data-width="632" data-height="360" /></video><figcaption>Surveillance video of the <a href="/wiki/2022_Andover_tornado" title="2022 Andover tornado">2022 Andover tornado</a> as it passed by a school. Several cameras in and outside of the building captured the event.</figcaption></figure> In the United States, Britain, Canada,<a href="#cite_note-65">[65]</a> Australia<a href="#cite_note-66">[66]</a> and New Zealand, CCTV is widely used in schools due to its success in preventing <a href="/wiki/Bullying" title="Bullying">bullying</a>, <a href="/wiki/Vandalism" title="Vandalism">vandalism</a>, monitoring visitors and maintaining a record of evidence of a crime. There are some restrictions, cameras not being installed in areas where there is a "reasonable <a href="/wiki/Expectation_of_privacy" class="mw-redirect" title="Expectation of privacy">expectation of privacy</a>", such as bathrooms, gym locker areas, and private offices (unless consent by the office occupant is given). Cameras are generally acceptable in hallways, parking lots, front offices where students, employees, and parents come and go, gymnasiums, cafeterias, supply rooms, and classrooms. Some teachers object to the installation of cameras.<a href="#cite_note-67">[67]</a> A study of high school students in Israeli schools shows that students' views on CCTV used in school are based on how they think of their teachers, school, and authorities.<a href="#cite_note-:1-68">[68]</a> It also stated that most students do not want CCTV installed inside a classroom.<a href="#cite_note-:1-68">[68]</a> <div class="mw-heading mw-heading3"><h3 id="Use_in_private_homes">Use in private homes</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=16" title="Edit section: Use in private homes">edit</a>]</div> Many homeowners choose to install CCTV systems either inside or outside their own homes, sometimes both. CCTV cameras are an effective deterrent to potential intruders as their use increases the risk of identification through the camera footage.<a href="#cite_note-69">[69]</a> If someone scouts through an affluent suburb seeking the easiest house to break into, having an obvious CCTV system, alarm or another security measure, makes the house appear to be a more difficult target so they will likely move on to the next house. Modern CCTV systems can be monitored through mobile phone apps which allows people to view live footage of their house from anywhere they have internet coverage. Some systems provide motion detection so when movement is detected, an alert can be sent to a phone.<a href="#cite_note-cnet-70">[70]</a> <div class="mw-heading mw-heading3"><h3 id="Criminal_use">Criminal use</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=17" title="Edit section: Criminal use">edit</a>]</div> Criminals may use surveillance cameras to monitor the public. For example, a hidden camera at an <a href="/wiki/Automated_Teller_Machine" class="mw-redirect" title="Automated Teller Machine">ATM</a> can capture people's <a href="/wiki/Personal_Identification_Number" class="mw-redirect" title="Personal Identification Number">PINs</a> as they are entered, without their knowledge. The devices are small enough not to be noticed, and are placed where they can monitor the keypad of the machine as people enter their PINs. Images may be transmitted wirelessly to the criminal. Even lawful surveillance cameras sometimes have their data go into the hands of people who have no legal right to receive it.<a href="#cite_note-71">[71]</a> <div class="mw-heading mw-heading3"><h3 id="Use_in_shopping_malls_and_retail_stores">Use in shopping malls and retail stores</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=18" title="Edit section: Use in shopping malls and retail stores">edit</a>]</div> Theft is a huge concern for many department stores and shopping malls. CCTV helps to protect stores' assets, and ensures the safety of employees and customers.<a href="#cite_note-72">[72]</a> <div class="mw-heading mw-heading3"><h3 id="Counter-terrorism">Counter-terrorism</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=19" title="Edit section: Counter-terrorism">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/War_on_terror" title="War on terror">War on terror</a></div> Material collected by surveillance cameras has been used as a tool in post-event forensics to identify tactics, techniques, and perpetrators of <a href="/wiki/Terrorist_attack" class="mw-redirect" title="Terrorist attack">terrorist attacks</a>. Furthermore, there are various projects − such as <a href="/wiki/INDECT" title="INDECT">INDECT</a> − that aim to detect suspicious behaviours of individuals and crowds.<a href="#cite_note-73">[73]</a> It has been argued that terrorists will not be deterred by cameras, that terror attacks are not really the subject of the current use of video surveillance and that terrorists might even see it as an extra channel for <a href="/wiki/Propaganda" title="Propaganda">propaganda</a> and publication of their acts.<a href="#cite_note-74">[74]</a><a href="#cite_note-75">[75]</a> In Germany calls for extended video surveillance by the country's main political parties, <a href="/wiki/Social_Democratic_Party_of_Germany" title="Social Democratic Party of Germany">SPD</a>, <a href="/wiki/Christian_Democratic_Union_of_Germany" title="Christian Democratic Union of Germany">CDU</a>, and <a href="/wiki/Christian_Social_Union_in_Bavaria" title="Christian Social Union in Bavaria">CSU</a> have been dismissed as "little more than a <a href="/wiki/Placebo" title="Placebo">placebo</a> for a subjective feeling of security" by a member of the Left party.<a href="#cite_note-76">[76]</a> <div class="mw-heading mw-heading2"><h2 id="Prevalence">Prevalence</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=20" title="Edit section: Prevalence">edit</a>]</div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Surveillance_cameras_mapped.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Surveillance_cameras_mapped.png/220px-Surveillance_cameras_mapped.png" decoding="async" width="220" height="109" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Surveillance_cameras_mapped.png/330px-Surveillance_cameras_mapped.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/64/Surveillance_cameras_mapped.png/440px-Surveillance_cameras_mapped.png 2x" data-file-width="1690" data-file-height="837" /></a><figcaption>A crowdsourced map of CCTV cameras near <a href="/wiki/Grande_Arche" title="Grande Arche">Grande Arche</a> using <a href="/wiki/OpenStreetMap" title="OpenStreetMap">OpenStreetMap</a> data<a href="#cite_note-77">[77]</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:SurveillanceCamera2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/SurveillanceCamera2.jpg/220px-SurveillanceCamera2.jpg" decoding="async" width="220" height="126" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/SurveillanceCamera2.jpg/330px-SurveillanceCamera2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fc/SurveillanceCamera2.jpg/440px-SurveillanceCamera2.jpg 2x" data-file-width="2168" data-file-height="1238" /></a><figcaption>Surveillance camera mounted on the walls of Rosenbad, one of the Swedish's government buildings in central Stockholm, which houses the Prime Minister's office; one of the parliament's (Riksdagen) building can be seen in the background</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:SurveillanceCamera4.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/SurveillanceCamera4.jpg/170px-SurveillanceCamera4.jpg" decoding="async" width="170" height="282" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/SurveillanceCamera4.jpg/255px-SurveillanceCamera4.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f5/SurveillanceCamera4.jpg/340px-SurveillanceCamera4.jpg 2x" data-file-width="2362" data-file-height="3912" /></a><figcaption>A surveillance camera, aimed at a public street (Kungsgatan) in Stockholm, Sweden, mounted on top of the pole</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:UnitedNationsNewYork.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/UnitedNationsNewYork.JPG/220px-UnitedNationsNewYork.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/UnitedNationsNewYork.JPG/330px-UnitedNationsNewYork.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7a/UnitedNationsNewYork.JPG/440px-UnitedNationsNewYork.JPG 2x" data-file-width="2848" data-file-height="2134" /></a><figcaption> The <a href="/wiki/Headquarters_of_the_United_Nations" title="Headquarters of the United Nations">headquarters of the United Nations</a> in New York, with cameras visible on the side of the <a href="/wiki/United_Nations_General_Assembly_Building" title="United Nations General Assembly Building">UN General Assembly Building</a></figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Asia">Asia</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=21" title="Edit section: Asia">edit</a>]</div> About 65% of CCTV cameras in the world are installed in Asia.<a href="#cite_note-SDM2016-78">[78]</a> In Asia, different human activities attracted the use of surveillance camera systems and services, including but not limited to business and related industries,[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]<a href="#cite_note-79">[79]</a> transportation,<a href="#cite_note-80">[80]</a> sports,<a href="#cite_note-81">[81]</a> and care for the environment.<a href="#cite_note-82">[82]</a> In 2018, China was reported to have <a href="/wiki/Mass_surveillance_in_China" title="Mass surveillance in China">a huge surveillance network</a> of over 170 million CCTV cameras with 400 million new cameras expected be installed in the next three years, many of which use facial recognition technology.<a href="#cite_note-83">[83]</a> In <a href="/wiki/Japan" title="Japan">Japan</a>, CCTV cameras are often referred to as "surveillance cameras" or "security cameras". <a href="/wiki/Nikkei_Business_Publications" title="Nikkei Business Publications">Nikkei Business</a> estimated that the total number of security cameras in Japan is approximately 5 million in 2018.<a href="#cite_note-84">[84]</a> <div class="mw-heading mw-heading3"><h3 id="United_States">United States</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=22" title="Edit section: United States">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:2017-08-13_Sunriver_Airport_18.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/2017-08-13_Sunriver_Airport_18.jpg/220px-2017-08-13_Sunriver_Airport_18.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/2017-08-13_Sunriver_Airport_18.jpg/330px-2017-08-13_Sunriver_Airport_18.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/58/2017-08-13_Sunriver_Airport_18.jpg/440px-2017-08-13_Sunriver_Airport_18.jpg 2x" data-file-width="2592" data-file-height="1944" /></a><figcaption>Surveillance camera mounted on a tripod in <a href="/wiki/Sunriver,_Oregon" title="Sunriver, Oregon">Sunriver, Oregon</a></figcaption></figure> There were an estimated 30 million surveillance cameras in the United States in 2011.<a href="#cite_note-85">[85]</a> Video surveillance has been common in the United States since the 1990s; for example, one manufacturer reported net earnings of $120 million in 1995.<a href="#cite_note-86">[86]</a> With lower cost and easier installation, sales of home security cameras increased in the early 21st century. Following the <a href="/wiki/September_11_attacks" title="September 11 attacks">September 11 attacks</a>, the use of video surveillance in public places became more common to deter future terrorist attacks.<a href="#cite_note-Yesil,_Bilge-26">[26]</a> Under the <a href="/wiki/Homeland_Security_Grant_Program" title="Homeland Security Grant Program">Homeland Security Grant Program</a>, government grants are available for cities to install surveillance camera networks.<a href="#cite_note-87">[87]</a><a href="#cite_note-88">[88]</a><a href="#cite_note-89">[89]</a> In 2009, there were an estimated 15,000 CCTV systems in <a href="/wiki/Chicago" title="Chicago">Chicago</a>, many linked to an integrated camera network.<a href="#cite_note-WSJ2009-90">[90]</a><a href="#cite_note-91">[91]</a><a href="#cite_note-92">[92]</a> New York City's <a href="/wiki/Domain_Awareness_System" title="Domain Awareness System">Domain Awareness System</a> has 6,000 video surveillance cameras linked together,<a href="#cite_note-93">[93]</a> there are over 4,000 cameras on the subway system (although nearly half of them do not work),<a href="#cite_note-94">[94]</a> and two-thirds of large apartment and commercial buildings use video surveillance cameras.<a href="#cite_note-95">[95]</a><a href="#cite_note-96">[96]</a> In <a href="/wiki/Washington,_D.C." title="Washington, D.C.">Washington, D.C.</a> there are more than 30,000 surveillance cameras in schools,<a href="#cite_note-97">[97]</a> and the <a href="/wiki/Washington_Metro" title="Washington Metro">Metro</a> has nearly 6,000 cameras in use across the system.<a href="#cite_note-98">[98]</a> <div class="mw-heading mw-heading3"><h3 id="United_Kingdom">United Kingdom</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=23" title="Edit section: United Kingdom">edit</a>]</div> In the United Kingdom, the vast majority of CCTV cameras are operated not by government bodies, but by private individuals or companies, especially to monitor the interiors of shops and businesses. According to the <a href="/wiki/Freedom_of_Information_Act_2000" title="Freedom of Information Act 2000">Freedom of Information Act 2000</a> requests, the total number of local government operated CCTV cameras was around 52,000 over the entirety of the UK.<a href="#cite_note-refBBW1-99">[99]</a> An article published in CCTV Image magazine estimated the number of private and local government operated cameras in the United Kingdom was 1.85 million in 2011. The estimate was based on extrapolating from a comprehensive survey of public and private cameras within the Cheshire Constabulary jurisdiction. This works out as an average of one camera for every 32 people in the UK, although the density of cameras varies greatly from place to place. The Cheshire report also claims that the average person on a typical day would be seen by 70 CCTV cameras.<a href="#cite_note-Guardian2011-100">[100]</a> The Cheshire figure is regarded as more dependable than a previous study by Michael McCahill and Clive Norris of UrbanEye published in 2002.<a href="#cite_note-Guardian2011-100">[100]</a><a href="#cite_note-101">[101]</a> Based on a small sample in <a href="/wiki/Putney" title="Putney">Putney</a> High Street, McCahill and Norris extrapolated the number of surveillance cameras in <a href="/wiki/London" title="London">Greater London</a> to be around 500,000 and the total number of cameras in the UK to be around 4,200,000. According to their estimate the UK has one camera for every 14 people. Although it has been acknowledged for several years that the methodology behind this figure is flawed,<a href="#cite_note-102">[102]</a> it has been widely quoted. Furthermore, the figure of 500,000 for Greater London is often confused with the figure for the police and local government operated cameras in the <a href="/wiki/City_of_London" title="City of London">City of London</a>, which was about 650 in 2011.<a href="#cite_note-refBBW1-99">[99]</a> The CCTV User Group estimated that there were around 1.5 million private and local government CCTV cameras in city centres, stations, airports, and major retail areas in the UK.<a href="#cite_note-103">[103]</a> Research conducted by the Scottish Centre for Crime and Justice Research and based on a survey of all Scottish local authorities, identified that there are over 2,200 public space CCTV cameras in Scotland.<a href="#cite_note-104">[104]</a> <div class="mw-heading mw-heading3"><h3 id="Canada">Canada</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=24" title="Edit section: Canada">edit</a>]</div> Project SCRAM is a policing effort by the <a href="/wiki/Halton_Regional_Police_Service" title="Halton Regional Police Service">Halton Regional Police Service</a> to register and help consumers understand the complex issues of privacy and safety that confront households when dealing with installations of home security systems. "The SCRAM program enables community members to voluntarily identify and register their residential video surveillance equipment through a simple, secure, confidential, online form."<a href="#cite_note-One_Vision,_One_Mission,_One_Team-105">[105]</a> It has not been extended to commercial businesses. A wide-ranging effort to provide registration and monitoring of home security and systems. "Security camera registration and monitoring is a community-based <a href="/wiki/Crime_prevention" title="Crime prevention">crime prevention</a> opportunity and investigative tool that enlists the help of residents and can help prevent <a href="/wiki/Crime" title="Crime">crime</a> on three levels. Residential video surveillance cameras can deter criminals from entering the area, can prevent crimes from occurring and help solve crimes by providing valuable <a href="/wiki/Evidence" title="Evidence">evidence</a> to the <a href="/wiki/Police" title="Police">police</a>."<a href="#cite_note-One_Vision,_One_Mission,_One_Team-105">[105]</a> <div class="mw-heading mw-heading3"><h3 id="South_Africa">South Africa</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=25" title="Edit section: South Africa">edit</a>]</div> In South Africa due to the <a href="/wiki/Crime_in_South_Africa" title="Crime in South Africa">high crime rate</a> CCTV surveillance is widely prevalent, but the country has been slow to implement the latest technology. For example, the first <a href="/wiki/IP_camera" title="IP camera">IP camera</a> was released in 1996 by <a href="/wiki/Axis_Communications" title="Axis Communications">Axis Communications</a> but IP cameras did not arrive in South Africa till 2008.<a href="#cite_note-106">[106]</a> To regulate the number of suppliers in 2001 the Private Security Industry Regulation Act was passed requiring all security companies to be registered with the Private Security Industry Regulatory Authority (PSIRA).<a href="#cite_note-107">[107]</a> <div class="mw-heading mw-heading3"><h3 id="Latin_America">Latin America</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=26" title="Edit section: Latin America">edit</a>]</div> In Latin America, the CCTV market is growing rapidly with the increase of property crime.<a href="#cite_note-108">[108]</a> Installation of CCTV camera is increasing day by day and the crime is somewhat controlled.<a href="#cite_note-109">[109]</a> <div class="mw-heading mw-heading3"><h3 id="Russia">Russia</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=27" title="Edit section: Russia">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Soviet_Motorised_CCTV_camera_-_panoramio.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Soviet_Motorised_CCTV_camera_-_panoramio.jpg/220px-Soviet_Motorised_CCTV_camera_-_panoramio.jpg" decoding="async" width="220" height="146" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Soviet_Motorised_CCTV_camera_-_panoramio.jpg/330px-Soviet_Motorised_CCTV_camera_-_panoramio.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Soviet_Motorised_CCTV_camera_-_panoramio.jpg/440px-Soviet_Motorised_CCTV_camera_-_panoramio.jpg 2x" data-file-width="4288" data-file-height="2848" /></a><figcaption>Soviet motorized CCTV camera</figcaption></figure> The number of CCTV cameras equipped with facial biometrics in Moscow's public surveillance network is set to grow by 70 times from the current 1,500 to 105,000 by the end of the year. The CCTV system in Moscow can now recognize faces using an algorithm based on neural networks. City camera recordings are analyzed in real-time. Faces on the screen are scanned and can be checked against several databases, such as the police database, to identify a suspect. This analytical system can also help police recreate a suspect's movements around the city. The system searches for related recordings from various CCTV cameras and identifies the same face from several sightings. The Moscow network includes 160,000 CCTV cameras and 95 percent of residential buildings. By the end of the year, residents will be able to install CCTV cameras on private buildings themselves while connecting them to the unified video observation system. This year, over 3,500 cameras have been connected to the General Centre for Data Storage and Processing. This includes cameras in entrance halls, schools and kindergartens, at MCC stations, stadiums, public transport stops and bus terminals, and in parks. Video recordings are used to solve 70 percent of offenses and crimes. The cameras also help monitor utility services. A department spokesperson added that Moscow has one of the largest security systems in the world with such a comprehensive identification system.<a href="#cite_note-110">[110]</a> <div class="mw-heading mw-heading2"><h2 id="Privacy">Privacy</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=28" title="Edit section: Privacy">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Wfm_cctv_van.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Wfm_cctv_van.jpg/220px-Wfm_cctv_van.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Wfm_cctv_van.jpg/330px-Wfm_cctv_van.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Wfm_cctv_van.jpg/440px-Wfm_cctv_van.jpg 2x" data-file-width="2288" data-file-height="1712" /></a><figcaption>A mobile closed-circuit TV van monitoring a street market</figcaption></figure><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Visual_privacy" title="Visual privacy">Visual privacy</a></div> Proponents of CCTV cameras argue that cameras are effective at deterring and solving crime, and that appropriate regulation and legal restrictions on surveillance of public spaces can provide sufficient protections so that an individual's <a href="/wiki/Right_to_privacy" title="Right to privacy">right to privacy</a> can reasonably be weighed against the benefits of surveillance.<a href="#cite_note-111">[111]</a> However, <a href="/wiki/Anti-surveillance_activists" class="mw-redirect" title="Anti-surveillance activists">anti-surveillance activists</a> have held that there is a right to privacy in public areas. Furthermore, while it is true that there may be scenarios wherein a person's right to public privacy can be both reasonably and justifiably compromised, some scholars have argued that such situations are so rare as to not sufficiently warrant the frequent compromising of public privacy rights that occurs in regions with widespread CCTV surveillance. For example, in her book Setting the Watch: Privacy and the Ethics of CCTV Surveillance, Beatrice von Silva-Tarouca Larsen argues that CCTV surveillance is ethically permissible only in "certain restrictively defined situations", such as when a specific location has a "comprehensively documented and significant criminal threat".<a href="#cite_note-112">[112]</a> In the <a href="/wiki/United_States" title="United States">United States</a>, the Constitution does not explicitly include the <a href="/wiki/Right_to_privacy" title="Right to privacy">right to privacy</a> although the <a href="/wiki/Supreme_Court_of_the_United_States" title="Supreme Court of the United States">Supreme Court</a> has said several of the amendments to the Constitution implicitly grant this right.<a href="#cite_note-113">[113]</a> Access to video surveillance recordings may require a judge's <a href="/wiki/Writ" title="Writ">writ</a>, which is readily available.<a href="#cite_note-114">[114]</a> However, there is little legislation and regulation specific to video surveillance.<a href="#cite_note-115">[115]</a><a href="#cite_note-116">[116]</a> All countries in the <a href="/wiki/European_Union" title="European Union">European Union</a> are signatories to the <a href="/wiki/European_Convention_on_Human_Rights" title="European Convention on Human Rights">European Convention on Human Rights</a> which protects individual rights including the right to privacy. In the <a href="/wiki/United_Kingdom" title="United Kingdom">United Kingdom</a> the <a href="/wiki/Data_Protection_Act_1998" title="Data Protection Act 1998">Data Protection Act 1998</a> imposes legal restrictions on the uses of CCTV recordings and mandates the registration of CCTV systems with the Data Protection Agency. In 2004, the successor to the Data Protection Agency, the <a href="/wiki/Information_Commissioner%27s_Office" title="Information Commissioner's Office">Information Commissioner's Office</a> clarified that this required registration of all CCTV systems with the Commissioner, and prompt deletion of archived recordings. However, subsequent case law (Durant vs. FSA) limited the scope of the protection provided by this law, and not all CCTV systems are currently regulated.<a href="#cite_note-117">[117]</a> A 2007 report by the UK Information Commissioner's Office, highlighted the need for the public to be made more aware of the growing use of surveillance and the potential impact on civil liberties.<a href="#cite_note-118">[118]</a><a href="#cite_note-119">[119]</a> In the same year, a campaign group claimed the majority of CCTV cameras in the UK are operated illegally or are in breach of privacy guidelines.<a href="#cite_note-Telegraph2007-120">[120]</a> In response, the Information Commissioner's Office rebutted the claim and added that any reported abuses of the Data Protection Act are swiftly investigated.<a href="#cite_note-Telegraph2007-120">[120]</a> Even if there are some concerns arising from the use of CCTV such as involving privacy,<a href="#cite_note-121">[121]</a> more commercial establishments are still installing CCTV systems in the UK. In 2012, the UK government enacted the <a href="/wiki/Protection_of_Freedoms_Act_2012" title="Protection of Freedoms Act 2012">Protection of Freedoms Act</a> which includes several provisions related to controlling and restricting the collection, storage, retention, and use of information about individuals. Under this Act, the <a href="/wiki/Home_Office" title="Home Office">Home Office</a> published a code of practice in 2013 for the use of surveillance cameras by government and local authorities. The aim of the code is to help ensure their use is "characterised as surveillance by consent, and such consent on the part of the community must be informed consent and not assumed by a system operator. Surveillance by consent should be regarded as analogous to <a href="/wiki/Policing_by_consent" class="mw-redirect" title="Policing by consent">policing by consent</a>."<a href="#cite_note-122">[122]</a> In <a href="/wiki/Canada" title="Canada">Canada</a>, the use of video surveillance has grown very rapidly. In <a href="/wiki/Ontario" title="Ontario">Ontario</a>, both the municipal and provincial versions of the <a href="/wiki/Freedom_of_Information_and_Protection_of_Privacy_Act_(Ontario)" title="Freedom of Information and Protection of Privacy Act (Ontario)">Freedom of Information and Protection of Privacy Act</a> outline very specific guidelines that control how images and <a href="/wiki/Information" title="Information">information</a> can be gathered by this method and or released.<a href="#cite_note-123">[123]</a> In <a href="/wiki/Sweden" title="Sweden">Sweden</a>, the use of CCTV in public spaces is regulated both nationally and via <a href="/wiki/General_Data_Protection_Regulation" title="General Data Protection Regulation">GDPR</a> (the European privacy act). The national legislation requires permits for public operators (except for law-enforcement agencies since 1 January 2020) to install CCTV in spaces that allow access to the general public. In an opinion poll commissioned by <a href="/wiki/Lund_University" title="Lund University">Lund University</a> in August 2017, the general public of Sweden were asked to choose one measure that would ensure their need for privacy when subject to CCTV-operation in public spaces: 43% favored regulation in the form of clear routines for managing, storing and distributing image material generated from surveillance cameras, 39% favored regulation in the form of clear signage informing that camera surveillance in public spaces is present, 2% favored regulation in the form of having permits restricting the use of surveillance cameras during certain times of day/week, 10% favored regulation in the form of having restrictive policies for issuing permits for surveillance cameras in public spaces, and 6% were unsure or did not know.<a href="#cite_note-124">[124]</a> In the <a href="/wiki/Philippines" title="Philippines">Philippines</a>, the main laws governing CCTV usage are <a href="/wiki/Data_Privacy_Act_of_2012" class="mw-redirect" title="Data Privacy Act of 2012">Data Privacy Act of 2012</a> and the <a href="/wiki/Cybercrime_Prevention_Act_of_2012" title="Cybercrime Prevention Act of 2012">Cybercrime Prevention Act of 2012</a>. The Data Privacy Act of 2012 (Republic Act No. 10173) is the primary law that governs data privacy in the Philippines. The Act mandates that the privacy of individuals must be respected and protected. The law applies to CCTV cameras as they collect and process personal data. This means that the use of CCTV cameras must respect the principles of transparency, legitimate purpose, and proportionality. The Cybercrime Prevention Act of 2012 (Republic Act No. 10175) includes provisions that apply to CCTV usage. Under the Act, the unauthorized access to, interception of, or interference with data is a criminal offense. This means that unauthorized access to CCTV footage could potentially be considered a cybercrime.<a href="#cite_note-125">[125]</a><a href="#cite_note-126">[126]</a><a href="#cite_note-127">[127]</a> <div class="mw-heading mw-heading2"><h2 id="Technological_developments">Technological developments</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=29" title="Edit section: Technological developments">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Closed.circuit.camera.arp.750pix.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Closed.circuit.camera.arp.750pix.jpg/220px-Closed.circuit.camera.arp.750pix.jpg" decoding="async" width="220" height="161" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Closed.circuit.camera.arp.750pix.jpg/330px-Closed.circuit.camera.arp.750pix.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Closed.circuit.camera.arp.750pix.jpg/440px-Closed.circuit.camera.arp.750pix.jpg 2x" data-file-width="750" data-file-height="550" /></a><figcaption>Surveillance camera at London Heathrow Airport with a wiper for clear images during rain</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Computer-controlled_analytics_and_identification">Computer-controlled analytics and identification</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=30" title="Edit section: Computer-controlled analytics and identification">edit</a>]</div> Computer-controlled cameras can identify, <a href="/wiki/Video_tracking" title="Video tracking">track</a>, and categorize objects in their field of view.<a href="#cite_note-128">[128]</a> <a href="/wiki/Video_content_analysis" title="Video content analysis">Video content analysis</a>, also referred to as video analytics, is the capability of automatically analyzing <a href="/wiki/Video" title="Video">video</a> to detect and determine temporal events not based on a single image, but rather <a href="/wiki/Object_classification" class="mw-redirect" title="Object classification">object classification</a>.<a href="#cite_note-129">[129]</a> In the last decade, improved VCA features have been developed. Beyond recognizing specific shapes and colors, VCA applications now can analyze more complex scenarios. Advanced VCA applications can accurately classify object types based on their shape and motion behavior and they can also measure object speed. Some video analytics applications can be used to virtually apply rules to designated areas. These rules can relate to access control. For example, they can describe which objects can enter into a specific area, when they are allowed to enter or within what circumstances. Virtually applied rules can also relate to various motion situations. VCA based CCTV systems can be set to detect anomalies in a crowd, for instance a person moving in the opposite direction in which they are normally expected (e.g. debarking from a plane at an airport or exiting through an entrance in a subway).<a href="#cite_note-130">[130]</a> There are different approaches to implementing VCA technology. Data may be processed on the camera itself (edge processing) or by a centralized server. Both approaches have their pros and cons.<a href="#cite_note-131">[131]</a> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Eye-in-the-sky083.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Eye-in-the-sky083.jpg/170px-Eye-in-the-sky083.jpg" decoding="async" width="170" height="257" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Eye-in-the-sky083.jpg/255px-Eye-in-the-sky083.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Eye-in-the-sky083.jpg/340px-Eye-in-the-sky083.jpg 2x" data-file-width="800" data-file-height="1208" /></a><figcaption>Eye-in-the-sky surveillance dome camera watching from a high steel pole</figcaption></figure> To many, the development of CCTV in public areas, linked to computer databases of people's pictures and identity, presents a serious breach of <a href="/wiki/Civil_liberties" title="Civil liberties">civil liberties</a>. Critics fear such technology will lead to the loss of <a href="/wiki/Anonymity" title="Anonymity">anonymity</a> in <a href="/wiki/Public_place" class="mw-redirect" title="Public place">public places</a>.<a href="#cite_note-132">[132]</a> <div class="mw-heading mw-heading3"><h3 id="Retention,_storage_and_preservation">Retention, storage and preservation</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=31" title="Edit section: Retention, storage and preservation">edit</a>]</div> There is a cost in the retention of the images produced by CCTV systems. The amount and quality of data stored on storage media is subject to compression ratios, images stored per second, image size, and is affected by the retention period of the videos or images.<a href="#cite_note-JVSG_Video_Compression_Guide_2010-133">[133]</a> DVRs store images in a variety of <a href="/wiki/Proprietary_file_format" title="Proprietary file format">proprietary file formats</a>. Recordings may be retained for a preset amount of time and then automatically archived, overwritten, or deleted, the period being determined by the organisation that generated them. <div class="mw-heading mw-heading3"><h3 id="IP_cameras">IP cameras</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=32" title="Edit section: IP cameras">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/IP_camera" title="IP camera">IP camera</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Intellinet_Network_Solutions_NSC11-WN_Home_Network_IP_Camera.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/a/ad/Intellinet_Network_Solutions_NSC11-WN_Home_Network_IP_Camera.jpg" decoding="async" width="210" height="320" class="mw-file-element" data-file-width="210" data-file-height="320" /></a><figcaption>Easy Connect Wireless <a href="/wiki/IP_camera" title="IP camera">IP camera</a></figcaption></figure> A growing branch in CCTV is internet protocol cameras (IP cameras). It is estimated that 2014 was the first year that IP cameras outsold analog cameras.<a href="#cite_note-134">[134]</a> IP cameras use the <a href="/wiki/Internet_Protocol" title="Internet Protocol">Internet Protocol</a> (IP) used by most <a href="/wiki/Local_area_network" title="Local area network">local area networks</a> (LANs) to transmit video across data networks in digital form. IP can optionally be transmitted across the public internet, allowing users to view their cameras remotely on a computer or phone via an internet connection.<a href="#cite_note-135">[135]</a> For professional or public infrastructure security applications, IP video is restricted to within a private network or <a href="/wiki/VPN" class="mw-redirect" title="VPN">VPN</a>.<a href="#cite_note-136">[136]</a> IP cameras are considered part of the <a href="/wiki/Internet_of_things" title="Internet of things">Internet of Things</a> (<a href="/wiki/Internet_of_things" title="Internet of things">IoT</a>) and have many of the same benefits and security risks as other IP-enabled devices.<a href="#cite_note-137">[137]</a> Main types of IP cameras include: fixed cameras, <a href="/wiki/Pan%E2%80%93tilt%E2%80%93zoom_camera" title="Pan–tilt–zoom camera">pan-tilt-zoom</a> (PTZ) cameras and multi-sensor cameras.<a href="#cite_note-138">[138]</a> Fixed cameras' resolution can vary based on the application area, but typically does not exceed 20 MP. The main feature of a PTZ is its remote directional and optical zoom capability. With multi-sensor cameras, wider areas can be monitored and hundreds of <a href="/wiki/Megapixel" class="mw-redirect" title="Megapixel">megapixel</a> resolution can be achieved. Industrial video surveillance systems use <a href="/wiki/Network_video_recorder" title="Network video recorder">network video recorders</a> to support IP cameras. These devices are responsible for the recording, storage, video stream processing, and alarm management. Since 2008, IP video surveillance manufacturers can use a standardized network interface (<a href="/wiki/ONVIF" title="ONVIF">ONVIF</a>) to support compatibility between systems.<a href="#cite_note-139">[139]</a> <div class="mw-heading mw-heading3"><h3 id="Networking_CCTV_cameras">Networking CCTV cameras</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=33" title="Edit section: Networking CCTV cameras">edit</a>]</div> The city of <a href="/wiki/Chicago" title="Chicago">Chicago</a> operates a networked video surveillance system which combines CCTV video feeds of government agencies with those of the private sector, installed in city buses, businesses, public schools, subway stations, housing projects, etc.<a href="#cite_note-140">[140]</a> Even homeowners are able to contribute footage. It is estimated to incorporate the video feeds of a total of 15,000 cameras.<a href="#cite_note-141">[141]</a> The system is used by Chicago's <a href="/wiki/Office_of_Emergency_Management" class="mw-redirect" title="Office of Emergency Management">Office of Emergency Management</a> in case of an emergency call: it detects the caller's location and instantly displays the real-time video feed of the nearest security camera to the operator, not requiring any user intervention. While the system is far too vast to allow complete real-time monitoring, it stores the video data for use as evidence in criminal cases.<a href="#cite_note-142">[142]</a> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Integrated_LCD_DVR.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Integrated_LCD_DVR.jpg/220px-Integrated_LCD_DVR.jpg" decoding="async" width="220" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Integrated_LCD_DVR.jpg/330px-Integrated_LCD_DVR.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Integrated_LCD_DVR.jpg/440px-Integrated_LCD_DVR.jpg 2x" data-file-width="1000" data-file-height="759" /></a><figcaption>An integrated systems unit</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Wireless_security_cameras">Wireless security cameras</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=34" title="Edit section: Wireless security cameras">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Wireless_security_camera" title="Wireless security camera">Wireless security camera</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Lorex_digital_wireless_camera.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Lorex_digital_wireless_camera.jpg/220px-Lorex_digital_wireless_camera.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Lorex_digital_wireless_camera.jpg/330px-Lorex_digital_wireless_camera.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Lorex_digital_wireless_camera.jpg/440px-Lorex_digital_wireless_camera.jpg 2x" data-file-width="2816" data-file-height="2112" /></a><figcaption><a href="/wiki/Wireless_security_camera" title="Wireless security camera">Wireless security camera</a></figcaption></figure> Many consumers are turning to wireless security cameras for home surveillance. Wireless cameras do not require a video cable for video/audio transmission, simply a cable for power. Wireless cameras are also easy and inexpensive to install, but they lack the reliability of hard-wired cameras.<a href="#cite_note-143">[143]</a> Previous generations of wireless security cameras relied on analogue technology; modern wireless cameras use digital technology which delivers crisper audio, sharper video, and a secure and interference-free signal.<a href="#cite_note-144">[144]</a> Nowadays, Smart dual light is used in cameras for night vision and to record brighter videos of dark rooms.<a href="#cite_note-145">[145]</a> <div class="mw-heading mw-heading3"><h3 id="Talking_CCTV">Talking CCTV</h3>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=35" title="Edit section: Talking CCTV">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Talking_CCTV" title="Talking CCTV">Talking CCTV</a></div> In <a href="/wiki/Wiltshire" title="Wiltshire">Wiltshire</a>, <a href="/wiki/United_Kingdom" title="United Kingdom">UK</a>, 2003, a pilot scheme for what is now known as "Talking CCTV" was put into action, allowing operators of CCTV cameras to order offenders to stop their wrongdoings, ranging from ordering subjects to pick up their rubbish and put it in a bin to ordering groups of vandals to disperse. In 2005, Ray Mallon, the mayor and former senior police officer of <a href="/wiki/Middlesbrough" title="Middlesbrough">Middlesbrough</a> implemented "Talking CCTV" in his area.<a href="#cite_note-146">[146]</a> Other towns have had such cameras installed. In 2007, several of the devices were installed in <a href="/wiki/Bridlington" title="Bridlington">Bridlington</a> town centre, <a href="/wiki/East_Riding_of_Yorkshire" title="East Riding of Yorkshire">East Riding of Yorkshire</a>.<a href="#cite_note-147">[147]</a> <div class="mw-heading mw-heading2"><h2 id="Countermeasures">Countermeasures</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=36" title="Edit section: Countermeasures">edit</a>]</div> Due to the widespread implementation of surveillance cameras, glasses that can defeat CCTV cameras have been constructed. In December 2016, a form of anti-CCTV and facial recognition sunglasses called "reflectacles" were invented by a custom-spectacle-craftsman based in Chicago named Scott Urban.<a href="#cite_note-148">[148]</a> They reflect infrared and, optionally, visible light which makes the user's face a white blur to cameras. The project passed its funding goal of $28,000, and "reflectacles" became commercially available in June 2017.<a href="#cite_note-149">[149]</a> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:CCTV_graffiti_-_geograph.org.uk_-_977154.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/CCTV_graffiti_-_geograph.org.uk_-_977154.jpg/240px-CCTV_graffiti_-_geograph.org.uk_-_977154.jpg" decoding="async" width="240" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/CCTV_graffiti_-_geograph.org.uk_-_977154.jpg/360px-CCTV_graffiti_-_geograph.org.uk_-_977154.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cb/CCTV_graffiti_-_geograph.org.uk_-_977154.jpg/480px-CCTV_graffiti_-_geograph.org.uk_-_977154.jpg 2x" data-file-width="640" data-file-height="480" /></a><figcaption>Anti-CCTV graffiti</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=37" title="Edit section: See also">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 30em;"> <ul><li><a href="/wiki/Artificial_intelligence_for_video_surveillance" title="Artificial intelligence for video surveillance">Artificial intelligence for video surveillance</a></li> <li><a href="/wiki/Bugging" class="mw-redirect" title="Bugging">Bugging</a></li> <li><a href="/wiki/Cable_TV" class="mw-redirect" title="Cable TV">"CATV" as cable television</a>—not to be confused with CCTV</li> <li><a href="/wiki/Closed-circuit_television_camera" title="Closed-circuit television camera">Closed-circuit television camera</a></li> <li><a href="/wiki/Day_and_night_camera" title="Day and night camera">Day and night camera</a></li> <li><a href="/wiki/Effio" title="Effio">Effio</a>, uncompressed analog streaming video format</li> <li><a href="/wiki/Eye_in_the_sky_(camera)" title="Eye in the sky (camera)">Eye in the sky (camera)</a></li> <li><a href="/wiki/Fake_security_camera" title="Fake security camera">Fake security camera</a></li> <li><a href="/wiki/INDECT" title="INDECT">INDECT</a></li> <li><a href="/wiki/IP_camera" title="IP camera">IP camera</a></li> <li><a href="/wiki/Security_operations_center" title="Security operations center">Security operations center</a></li> <li><a href="/wiki/Security_smoke" title="Security smoke">Security smoke</a></li> <li><a href="/wiki/Smart_camera" title="Smart camera">Smart camera</a></li> <li><a href="/wiki/Sousveillance" title="Sousveillance">Sousveillance</a> (inverse surveillance)</li> <li><a href="/wiki/Surveillance" title="Surveillance">Surveillance</a></li> <li><a href="/wiki/The_Convention_on_Modern_Liberty" class="mw-redirect" title="The Convention on Modern Liberty">The Convention on Modern Liberty</a></li> <li><a href="/wiki/TV_Network_Protocol" title="TV Network Protocol">TV Network Protocol</a></li> <li><a href="/wiki/Under_vehicle_inspection" title="Under vehicle inspection">Under vehicle inspection</a></li> <li><a href="/wiki/Video_analytics" class="mw-redirect" title="Video analytics">Video analytics</a></li> <li><a href="/wiki/Video_evidence" class="mw-redirect" title="Video evidence">Video evidence</a></li> <li><a href="/wiki/Videotelephony" title="Videotelephony">Videotelephony</a></li> <li><a href="/wiki/Washington_County_Closed-Circuit_Educational_Television_Project" title="Washington County Closed-Circuit Educational Television Project">Washington County Closed-Circuit Educational Television Project</a></li> <li><a href="/wiki/Unmanned_aerial_vehicle#Applications" title="Unmanned aerial vehicle">Surveillance Drone</a></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=38" title="Edit section: References">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFKumarSvensson2015" class="citation book cs1">Kumar, Vikas; Svensson, Jakob, eds. (2015). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=jkdLCgAAQBAJ&pg=PA75">Promoting Social Change and Democracy Through Information Technology</a>. IGI Global. p. 75. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781466685031" title="Special:BookSources/9781466685031"><bdi>9781466685031</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Promoting+Social+Change+and+Democracy+Through+Information+Technology&rft.pages=75&rft.pub=IGI+Global&rft.date=2015&rft.isbn=9781466685031&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DjkdLCgAAQBAJ%26pg%3DPA75&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDempsey2008" class="citation book cs1">Dempsey, John S. (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=qQo7oDMSVXgC&pg=PA78">Introduction to private security</a>. 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Retrieved 28 March 2011.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=MATE%27s+Analytics+Integrate+with+Hirsch+Security+Systems&rft_id=http%3A%2F%2Fwww.mate.co.il%2Fpage.asp%3Fnewsid%3D53%26type%3D6%26cat%3D28%26lang%3D1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-131"><a href="#cite_ref-131">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.ercim.eu/publication/ws-proceedings/DELOS4/oliveira.pdf">"Image Processing Techniques for Video Content Extraction"</a> (PDF). <a rel="nofollow" class="external text" href="https://ghostarchive.org/archive/20221009/http://www.ercim.eu/publication/ws-proceedings/DELOS4/oliveira.pdf">Archived</a> (PDF) from the original on 9 October 2022.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Image+Processing+Techniques+for+Video+Content+Extraction&rft_id=http%3A%2F%2Fwww.ercim.eu%2Fpublication%2Fws-proceedings%2FDELOS4%2Foliveira.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-132"><a href="#cite_ref-132">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTodd_Lewan2007" class="citation news cs1">Todd Lewan (7 July 2007). <a rel="nofollow" class="external text" href="https://www.usatoday.com/tech/news/surveillance/2007-07-21-chips_N.htm">"Microchips in humans spark privacy debate"</a>. <a href="/wiki/USAToday" class="mw-redirect" title="USAToday">USAToday</a>. 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Retrieved 23 June 2021.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=internationalsecurityjournal.com&rft.atitle=Selecting+the+most+suitable+cameras+to+monitor+large+areas&rft.date=2020-11-19&rft_id=https%3A%2F%2Finternationalsecurityjournal.com%2Fselecting-most-suitable-cameras%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-139"><a href="#cite_ref-139">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.ifsecglobal.com/onvif/">"ONVIF: a guide to the open security platform"</a>. ifsecglobal.com. IFSEC Global. 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Archived from <a rel="nofollow" class="external text" href="http://www-03.ibm.com/press/us/en/pressrelease/22385.wss">the original</a> on 24 May 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=IBM+News+Room&rft.atitle=The+City+of+Chicago%27s+OEMC+and+IBM+Launch+Advanced+Video+Surveillance+System&rft_id=http%3A%2F%2Fwww-03.ibm.com%2Fpress%2Fus%2Fen%2Fpressrelease%2F22385.wss&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-141"><a href="#cite_ref-141">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWilliam_M._Bulkeley" class="citation news cs1">William M. Bulkeley. <a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB10001424052748704538404574539910412824756">"Chicago's Camera Network Is Everywhere"</a>. Wall Street Journal.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wall+Street+Journal&rft.atitle=Chicago%27s+Camera+Network+Is+Everywhere&rft.au=William+M.+Bulkeley&rft_id=https%3A%2F%2Fwww.wsj.com%2Farticles%2FSB10001424052748704538404574539910412824756&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-142"><a href="#cite_ref-142">^</a> "<a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB10001424052748704538404574539910412824756">Chicago's Camera Network Is Everywhere</a>", The Wall Street Journal </li> <li id="cite_note-143"><a href="#cite_ref-143">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://is3tech.com/commercial-security-camera-systems/cloud-based">"CCTV Camera Installation Guide"</a>. iS3 Tech. Retrieved 30 October 2023.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=iS3+Tech&rft.atitle=CCTV+Camera+Installation+Guide&rft_id=https%3A%2F%2Fis3tech.com%2Fcommercial-security-camera-systems%2Fcloud-based&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-144"><a href="#cite_ref-144">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSadun2006" class="citation book cs1">Sadun, Erica (26 December 2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=x_yb92nsqnUC&q=video+digital+vs+analog&pg=PA3">Digital Video Essentials: Shoot, Transfer, Edit, Share By Erica Sadun</a>. John Wiley & Sons. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780470113196" title="Special:BookSources/9780470113196"><bdi>9780470113196</bdi></a>. Retrieved 16 October 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Digital+Video+Essentials%3A+Shoot%2C+Transfer%2C+Edit%2C+Share+By+Erica+Sadun&rft.pub=John+Wiley+%26+Sons&rft.date=2006-12-26&rft.isbn=9780470113196&rft.aulast=Sadun&rft.aufirst=Erica&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dx_yb92nsqnUC%26q%3Dvideo%2Bdigital%2Bvs%2Banalog%26pg%3DPA3&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-145"><a href="#cite_ref-145">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="https://thaiccd.com/smart-dual-light/">"Smart Dual Light - thaiccd.com"</a> (in Thai). 27 March 2024. Retrieved 26 June 2024.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Smart+Dual+Light+-+thaiccd.com&rft.date=2024-03-27&rft_id=https%3A%2F%2Fthaiccd.com%2Fsmart-dual-light%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-146"><a href="#cite_ref-146">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="http://news.bbc.co.uk/2/hi/uk_news/england/tees/5353538.stm">"Town trials talking CCTV cameras"</a>. BBC News. 17 September 2006.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=BBC+News&rft.atitle=Town+trials+talking+CCTV+cameras&rft.date=2006-09-17&rft_id=http%3A%2F%2Fnews.bbc.co.uk%2F2%2Fhi%2Fuk_news%2Fengland%2Ftees%2F5353538.stm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-147"><a href="#cite_ref-147">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="http://news.bbc.co.uk/1/hi/england/humber/6492925.stm">"'Talking' CCTV cameras are tested"</a>. BBC News. 25 March 2007.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=BBC+News&rft.atitle=%27Talking%27+CCTV+cameras+are+tested&rft.date=2007-03-25&rft_id=http%3A%2F%2Fnews.bbc.co.uk%2F1%2Fhi%2Fengland%2Fhumber%2F6492925.stm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> <li id="cite_note-148"><a href="#cite_ref-148">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.magneticmag.com/2016/12/be-seen-and-unseen-reflectacles-are-the-sunglasses-of-the-future/">"Be Seen and Unseen! Reflectacles are the Sunglasses of the Future"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Be+Seen+and+Unseen%21+Reflectacles+are+the+Sunglasses+of+the+Future&rft_id=http%3A%2F%2Fwww.magneticmag.com%2F2016%2F12%2Fbe-seen-and-unseen-reflectacles-are-the-sunglasses-of-the-future%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988">[<a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot">dead link</a>‍] </li> <li id="cite_note-149"><a href="#cite_ref-149">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.kickstarter.com/projects/reflectacles/reflectacles-reflective-eyewear-and-sunglasses">"Reflectacles - Reflective Eyewear and Sunglasses"</a>. Kickstarter.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Kickstarter&rft.atitle=Reflectacles+-+Reflective+Eyewear+and+Sunglasses&rft_id=https%3A%2F%2Fwww.kickstarter.com%2Fprojects%2Freflectacles%2Freflectacles-reflective-eyewear-and-sunglasses&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=39" title="Edit section: Further reading">edit</a>]</div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFArmstrong,_Gary1999" class="citation book cs1">Armstrong, Gary, ed. (1999). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=6gENAQAAMAAJ">The maximum surveillance society: the rise of CCTV</a>. Berg (originally, University of Michigan Press). <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781859732212" title="Special:BookSources/9781859732212"><bdi>9781859732212</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+maximum+surveillance+society%3A+the+rise+of+CCTV&rft.pub=Berg+%28originally%2C+University+of+Michigan+Press%29&rft.date=1999&rft.isbn=9781859732212&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D6gENAQAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFyfe,_NicholasBannister,_Jon2005" class="citation book cs1">Fyfe, Nicholas; Bannister, Jon (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=box4yhB5TL4C&pg=PA364">"City Watching: Closed-Circuit Television in Public Spaces"</a>. In Fyfe, Nicholas; Kenny, Judith T. (eds.). <a rel="nofollow" class="external text" href="https://archive.org/details/urbangeographyre0000unse">The Urban Geography Reader</a>. Psychology Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780415307017" title="Special:BookSources/9780415307017"><bdi>9780415307017</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=City+Watching%3A+Closed-Circuit+Television+in+Public+Spaces&rft.btitle=The+Urban+Geography+Reader&rft.pub=Psychology+Press&rft.date=2005&rft.isbn=9780415307017&rft.au=Fyfe%2C+Nicholas&rft.au=Bannister%2C+Jon&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dbox4yhB5TL4C%26pg%3DPA364&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNassauer,_Anne2018" class="citation journal cs1">Nassauer, Anne (2018). <a rel="nofollow" class="external text" href="https://doi.org/10.1177%2F0022427817715754">"How Robberies Succeed or Fail: Analyzing Crime Caught on CCTV"</a>. <a href="/wiki/Journal_of_Research_in_Crime_and_Delinquency" title="Journal of Research in Crime and Delinquency">Journal of Research in Crime and Delinquency</a>. 55 (1): 125–154. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1177%2F0022427817715754">10.1177/0022427817715754</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Research+in+Crime+and+Delinquency&rft.atitle=How+Robberies+Succeed+or+Fail%3A+Analyzing+Crime+Caught+on+CCTV&rft.volume=55&rft.issue=1&rft.pages=125-154&rft.date=2018&rft_id=info%3Adoi%2F10.1177%2F0022427817715754&rft.au=Nassauer%2C+Anne&rft_id=https%3A%2F%2Fdoi.org%2F10.1177%252F0022427817715754&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNewburn,_TimHayman,_Stephanie2001" class="citation book cs1">Newburn, Tim; Hayman, Stephanie (2001). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=YaonBzDpUjIC">Policing, Surveillance and Social Control: CCTV and police monitoring of suspects</a>. Taylor & Francis. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781843924692" title="Special:BookSources/9781843924692"><bdi>9781843924692</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Policing%2C+Surveillance+and+Social+Control%3A+CCTV+and+police+monitoring+of+suspects&rft.pub=Taylor+%26+Francis&rft.date=2001&rft.isbn=9781843924692&rft.au=Newburn%2C+Tim&rft.au=Hayman%2C+Stephanie&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DYaonBzDpUjIC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNorris,_Clive2003" class="citation book cs1">Norris, Clive (2003). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=yCLFBfZwl08C&pg=PA249">"From Personal to Digital: CCTV, the panopticon, and the technological mediation of suspicion and social control"</a>. In Lyon, David (ed.). Surveillance as Social Sorting: Privacy, Risk, and Digital Discrimination. Psychology Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780415278737" title="Special:BookSources/9780415278737"><bdi>9780415278737</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=From+Personal+to+Digital%3A+CCTV%2C+the+panopticon%2C+and+the+technological+mediation+of+suspicion+and+social+control&rft.btitle=Surveillance+as+Social+Sorting%3A+Privacy%2C+Risk%2C+and+Digital+Discrimination&rft.pub=Psychology+Press&rft.date=2003&rft.isbn=9780415278737&rft.au=Norris%2C+Clive&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DyCLFBfZwl08C%26pg%3DPA249&rfr_id=info%3Asid%2Fen.wikipedia.org%3AClosed-circuit+television" class="Z3988"></li> <li>Wei Qi Yan (2019). <a rel="nofollow" class="external text" href="https://link.springer.com/book/10.1007/978-3-030-10713-0">Introduction to Intelligent Surveillance: Surveillance Data Capture, Transmission, and Analytics</a>, Springer London.</li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2>[<a href="/w/index.php?title=Closed-circuit_television&action=edit&section=40" title="Edit section: External links">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output 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href="/wiki/American_Civil_Liberties_Union" title="American Civil Liberties Union">American Civil Liberties Union</a></li> <li><a href="/wiki/Center_for_Democracy_and_Technology" title="Center for Democracy and Technology">Center for Democracy and Technology</a></li> <li><a href="/wiki/Computer_Professionals_for_Social_Responsibility" title="Computer Professionals for Social Responsibility">Computer Professionals for Social Responsibility</a></li> <li><a href="/wiki/Data_Privacy_Lab" title="Data Privacy Lab">Data Privacy Lab</a></li> <li><a href="/wiki/Electronic_Frontier_Foundation" title="Electronic Frontier Foundation">Electronic Frontier Foundation</a></li> <li><a href="/wiki/Electronic_Privacy_Information_Center" title="Electronic Privacy Information Center">Electronic Privacy Information Center</a></li> <li><a href="/wiki/European_Digital_Rights" title="European Digital Rights">European Digital Rights</a></li> <li><a href="/wiki/Future_of_Privacy_Forum" title="Future of Privacy 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