Biometrics | NIST

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grid-container"> <a href="/web/20230316200727/https://www.nist.gov/information-technology">Information Technology</a> </div> <div class="nist-section-header__sub"> <div class="nist-section-header__main grid-container"> <div class="grid-row"> <div class="nist-section-header__title"> <h1 class="nist-page__title">Biometrics</h1> </div> </div> </div> </div> </div> </div> <div class="grid-container"> </div> <div class="nist-page__region nist-page__region--main"> <div class="nist-block"> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">News and Updates</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-d5de1d08f93806beedf89a06e09dc172674ff2c042fa64ada4ae87d919054015"> <div> <article role="article" about="/news-events/news/2023/03/hundreds-sign-upcoming-nist-innovative-technologies-showcase-2" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230316200727/https://www.nist.gov/news-events/news/2023/03/hundreds-sign-upcoming-nist-innovative-technologies-showcase-2" hreflang="en"><img src="/web/20230316200727im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/03/08/NIST%20Showcase%20Banner_2023%20copy.png?itok=kBFqmrGX" width="100" height="50" alt="NIST Showcase Banner" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/news-events/news/2023/03/hundreds-sign-upcoming-nist-innovative-technologies-showcase-2"><span property="schema:name">Hundreds sign up for the upcoming NIST Innovative Technologies Showcase 2</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-03-08T12:00:00Z">March 8, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary">NIST鈥檚 second Innovative Technologies Showcase, a setting where three NIST researchers will present their latest and greatest technology, has gotten off to a</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/news/2022/07/spotlight-putting-our-finger-future-identity-verification" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230316200727/https://www.nist.gov/news-events/news/2022/07/spotlight-putting-our-finger-future-identity-verification" hreflang="en"><img src="/web/20230316200727im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/08/17/3DP_5317%20%281%29_0.png?itok=d9VIeCch" width="100" height="100" alt="Replica finger bones lie on a piece of cloth. " loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/news-events/news/2022/07/spotlight-putting-our-finger-future-identity-verification"><span property="schema:name">Spotlight: Putting Our Finger on the Future of Identity Verification</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-07-05T12:00:00Z">July 5, 2022</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary">Our researchers have developed ways of comparing fingerprint images captured through contact versus contactless processes.</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/news/2021/07/nist-evaluates-face-recognition-softwares-accuracy-flight-boarding" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230316200727/https://www.nist.gov/news-events/news/2021/07/nist-evaluates-face-recognition-softwares-accuracy-flight-boarding" hreflang="en"><img src="/web/20230316200727im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2021/07/12/21ITL018_boarding-security.png?itok=uXiAtqt_" width="100" height="70" alt="Illustration shows passengers boarding an international flight and having their faces matched to previously taken photos before passing through the gate." loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/news-events/news/2021/07/nist-evaluates-face-recognition-softwares-accuracy-flight-boarding"><span property="schema:name">NIST Evaluates Face Recognition Software鈥檚 Accuracy for Flight Boarding</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2021-07-13T12:00:00Z">July 13, 2021</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary">The most accurate face recognition algorithms have demonstrated the capability to confirm airline passenger identities while making very few errors, according</div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230316200727/https://www.nist.gov/news-events/news-updates/topic/248701">View All News and Updates</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> </div> <div class="grid-container margin-y-4"> </div> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">Projects and Programs</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-1f7749187be3f7761b2c3d2eb3fe6224fe2af268b4f81d2788187abcaa4d40d3"> <div> <article role="article" about="/programs-projects/biometric-standards-program-and-resource-center" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/programs-projects/biometric-standards-program-and-resource-center"><span>Biometric Standards Program and Resource Center</span> </a></h3> <div class="nist-teaser__type"> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> This page is no longer maintained. It is provided for historical information. To learn about our current work, visit the Biometrics Program page. </div> </div> </div> </article> </div> <div> <article role="article" about="/programs-projects/statistical-friction-ridge-analysis-sfra" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/programs-projects/statistical-friction-ridge-analysis-sfra"><span>Statistical Friction Ridge Analysis (SFRA)</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> This project aims to develop a statistical measure of the uncertainty of the decisions made on the friction ridge evidence (i.e., evidential value of </div> </div> </div> </article> </div> <div> <article role="article" about="/programs-projects/computational-biology-comparison-cell-image-segmentation-algorithms" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230316200727/https://www.nist.gov/programs-projects/computational-biology-comparison-cell-image-segmentation-algorithms" hreflang="en"><img src="/web/20230316200727im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/itl/sed/gsg/compbiocells_1.jpg?itok=_2wmPJXO" width="100" height="75" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/programs-projects/computational-biology-comparison-cell-image-segmentation-algorithms"><span>Computational Biology: Comparison of Cell Image Segmentation Algorithms</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> With the advent of automated data acquisition systems in conjunction with on-line imaging devices, the biological researcher is potentially confronted with </div> </div> </div> </article> </div> <div> <article role="article" about="/programs-projects/biometric-quality" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/programs-projects/biometric-quality"><span>Biometric Quality</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> Performance of biometric systems is dependent on the quality of the acquired input samples. If quality can be improved, either by sensor design, by user </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230316200727/https://www.nist.gov/laboratories/projects-programs/topic/248701">View All Projects/Programs</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">Publications</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-4858af6bc29656212af4e30acda047173f1460daa4b7fc7f4959ef176857618e"> <div> <article role="article" about="/publications/beginners-guide-biometric-and-forensic-human-subjects-research-protections" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/publications/beginners-guide-biometric-and-forensic-human-subjects-research-protections"><span>Beginners Guide to Biometric and Forensic Human Subjects Research Protections</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-01-12T12:00:00Z">January 12, 2023</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Melissa Taylor</span>, William Chapman, R. Austin Hicklin</div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">This document is designed to help researchers in the United States navigate and comply with requirements and best practices for human subjects research, with</div> </div> </div> </article> </div> <div> <article role="article" about="/publications/ongoing-face-recognition-vendor-test-frvt-part-9a-face-recognition-verification" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/publications/ongoing-face-recognition-vendor-test-frvt-part-9a-face-recognition-verification"><span>Ongoing Face Recognition Vendor Test (FRVT) Part 9a: Face Recognition Verification Accuracy on Distinguishing Twins</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-09-22T12:00:00Z">September 22, 2022</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Kayee Hanaoka</span>, <span class="nist-author">Mei Lee Ngan</span>, <span class="nist-author">Patrick J. Grother</span>, <span class="nist-author">Austin Hom</span></div> </div> </div> </header> <div class="nist-teaser__content"> </div> </div> </article> </div> <div> <article role="article" about="/publications/nist-2022-language-recognition-evaluation-plan" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/publications/nist-2022-language-recognition-evaluation-plan"><span>NIST 2022 Language Recognition Evaluation Plan</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-08-31T12:00:00Z">August 31, 2022</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Yooyoung Lee</span>, <span class="nist-author">Craig Greenberg</span>, Lisa Mason, Elliot Singer</div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">The 2022 NIST language recognition evaluation (LRE22) is the 9th cycle in an on-going language recognition evaluation series that began in 1996. The objectives</div> </div> </div> </article> </div> <div> <article role="article" about="/publications/face-recognition-vendor-test-frvt-part-4a-morph-utility-1n-face-recognition-algorithms" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/publications/face-recognition-vendor-test-frvt-part-4a-morph-utility-1n-face-recognition-algorithms"><span>Face Recognition Vendor Test (FRVT) Part 4A: MORPH - Utility of 1:N Face Recognition Algorithms for Morph Detection</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-07-29T12:00:00Z">July 29, 2022</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Mei Lee Ngan</span>, <span class="nist-author">Patrick J. Grother</span>, <span class="nist-author">Kayee Hanaoka</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">This report is a part of a series of studies on the topic of face morphing, its relevance and implications as a vulnerability to automated face recognition, and</div> </div> </div> </article> </div> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">Software</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-9c7151a810684180c5e599e2e621ac00eecdddf3dbe55baf47573e255aae5a02"> <div> <article role="article" about="/services-resources/software/nist-fingerprint-registration-and-comparison-tool-nfract" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/services-resources/software/nist-fingerprint-registration-and-comparison-tool-nfract"><span>NIST Fingerprint Registration and Comparison Tool (NFRaCT)</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-07-21T12:00:00Z">July 21, 2022</time> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">About The NIST Fingerprint Registration and Comparison Tool (NFRaCT) is a cross-platform GUI application which allows a user to load a pair of fingerprint</div> </div> </div> </article> </div> <div> <article role="article" about="/services-resources/software/nfiq-2" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/services-resources/software/nfiq-2"><span>NFIQ 2</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2021-11-12T12:00:00Z">November 12, 2021</time> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">The biometrics community recommended a new, open source, generalized version of NFIQ to be developed in consultation and collaboration with users and industry.</div> </div> </div> </article> </div> <div> <article role="article" about="/services-resources/software/dental-encoding-translator-applications-suite-dentas" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/services-resources/software/dental-encoding-translator-applications-suite-dentas"><span>Dental Encoding Translator Applications Suite (DEnTAS)</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2015-08-11T12:00:00Z">August 11, 2015</time> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">NIST is pleased to announce that it has developed a capability to translate input and output from the major forensic dental systems (each of which uses</div> </div> </div> </article> </div> <div> <article role="article" about="/services-resources/software/biometric-evaluation-framework" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/services-resources/software/biometric-evaluation-framework"><span>Biometric Evaluation Framework</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2014-08-05T12:00:00Z">August 5, 2014</time> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">Biometric Evaluation Framework is a set of C++ classes, error codes, and design patterns used to create a common environment to provide logging, data management</div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230316200727/https://www.nist.gov/services-resources/software/topic/248701">View All Software</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> </div> <div class="grid-container margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <div class="nist-region-heading"> <h2> <div class="string">Awards</div> </h2> </div> <div class="nist-block "> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-e6348d3eac2be696706a287bb933877cdb17f185cfb5a775be2a5560638429ec"> <div> <article role="article" about="/awards/diane-stephens-named-winner-2022-women-biometrics-award" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230316200727/https://www.nist.gov/awards/diane-stephens-named-winner-2022-women-biometrics-award" hreflang="en"><img src="/web/20230316200727im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/08/09/Diane%20Stephens%20Image.jpg?itok=SziAlZpv" width="100" height="96" alt="Image of Diane Stephens, NIST" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/awards/diane-stephens-named-winner-2022-women-biometrics-award"><span>Diane Stephens Named Winner for the 2022 Women in Biometrics Award</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long">Diane Stephens of the Information Access Division in NIST's Information Technology Laboratory has been named one of the 2022 Security</div> </div> </div> </article> </div> <div> <article role="article" about="/awards/p-jonathon-phillips-honored-career-achievement-award" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230316200727/https://www.nist.gov/awards/p-jonathon-phillips-honored-career-achievement-award" hreflang="en"><img src="/web/20230316200727im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2017/02/06/jonathon_phillips.jpg?itok=3lnWAUKa" width="100" height="80" alt="Jonathon Phillips headshot" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/awards/p-jonathon-phillips-honored-career-achievement-award"><span>P. Jonathon Phillips Honored with Career Achievement Award</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long">Dr. P. Jonathon Phillips is a world-renowned expert in computer vision, face recognition, and biometrics and a pioneer in developing</div> </div> </div> </article> </div> <div> <article role="article" about="/awards/elham-tabassi-2016-women-biometrics-award" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230316200727/https://www.nist.gov/awards/elham-tabassi-2016-women-biometrics-award" hreflang="en"><img src="/web/20230316200727im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2017/01/11/elham_tabassi.png?itok=P3eqkvOh" width="99" height="100" alt="Elham Tabassi" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230316200727/https://www.nist.gov/awards/elham-tabassi-2016-women-biometrics-award"><span>Elham Tabassi - 2016 Women in Biometrics Award</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long">Elham Tabassi, an electrical engineer in the Information Access Division, was one of four winners for the 2016 Women in Biometrics Award</div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230316200727/https://www.nist.gov/awards/topic/248701">View All Awards</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="grid-container margin-y-4"> </div> </div> </div> </section> </div> <div data-elastic-exclude>  <footer class="nist-footer padding-bottom-4"> <div class="grid-container nist-footer__info"> <div class="grid-row"> <div class="tablet:grid-col-6"> <div class="nist-footer__logo"> <a href="/web/20230316200727/https://www.nist.gov/" title="National Institute of Standards and Technology" rel="home"> <img class="nist-footer__logo-img" src="/web/20230316200727im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/NIST-Logo-Brand-White.svg" alt="National Institute of Standards and Technology logo" width="300px" height="42px"/> </a> </div> <div class="nist-footer__contact"> <h3 class="nist-footer__contact-heading">HEADQUARTERS</h3> <address> 100 Bureau Drive<br> Gaithersburg, MD 20899<br> <a href="https://web.archive.org/web/20230316200727/tel:301-975-2000">301-975-2000</a> </address> <p> <a href="https://web.archive.org/web/20230316200727/mailto:do-webmaster@nist.gov">Webmaster</a> | <a href="https://web.archive.org/web/20230316200727/https://www.nist.gov/about-nist/contact-us">Contact Us</a> | <a href="https://web.archive.org/web/20230316200727/https://www.nist.gov/visit">Our Other Offices</a> </p> </div> </div> <div class="tablet:grid-col-6"> <div class="nist-footer__social-links"> <a class="nist-social nist-social--twitter-white" href="https://web.archive.org/web/20230316200727/https://twitter.com/NIST"> <span>Twitter</span> </a> <a class="nist-social nist-social--facebook-white" href="https://web.archive.org/web/20230316200727/https://www.facebook.com/NIST"> <span>Facebook</span> </a> <a class="nist-social nist-social--linkedin-white" href="https://web.archive.org/web/20230316200727/https://www.linkedin.com/company/nist"> <span>LinkedIn</span> </a> <a class="nist-social nist-social--instagram-white" href="https://web.archive.org/web/20230316200727/https://www.instagram.com/nist/"> <span>Instagram</span> </a> <a class="nist-social nist-social--youtube-white" href="https://web.archive.org/web/20230316200727/https://www.youtube.com/NIST"> <span>YouTube</span> </a> <a class="nist-social nist-social--giphy-white" href="https://web.archive.org/web/20230316200727/https://giphy.com/nist"> <span>Giphy</span> </a> <a class="nist-social nist-social--rss-white" href="https://web.archive.org/web/20230316200727/https://www.nist.gov/news-events/nist-rss-feeds"> <span>RSS Feed</span> </a> <a class="nist-social nist-social--envelope-white" href="https://web.archive.org/web/20230316200727/https://public.govdelivery.com/accounts/USNIST/subscriber/new"> <span>Mailing List</span> </a> </div> <div class="nist-footer__feedback"> How are we doing? 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