Set up seamless credential sharing across Android apps and websites | Credential Management

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class="devsite-nav-item-title"> Using OAuth 2.0 </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Share data with Google apps and devices</li> <li class="devsite-nav-item"> <a href="https://developers.google.com/identity/account-linking" track-type="nav" track-metadata-eventdetail="https://developers.google.com/identity/account-linking" track-metadata-position="nav - authorization" track-metadata-module="tertiary nav" track-metadata-module_headline="call google apis" tooltip > <div class="devsite-nav-item-title"> Google Account Linking </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown devsite-active "> <a href="https://developers.google.com/identity/credential-management" track-metadata-eventdetail="https://developers.google.com/identity/credential-management" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - credential management" 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tooltip>Android</li> <li class="devsite-nav-item"> <a href="https://developers.google.com/identity/android-credential-manager" track-type="nav" track-metadata-eventdetail="https://developers.google.com/identity/android-credential-manager" track-metadata-position="nav - credential management" track-metadata-module="tertiary nav" track-metadata-module_headline="android" tooltip > <div class="devsite-nav-item-title"> Credential Manager </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/identity/blockstore/android" track-type="nav" track-metadata-eventdetail="https://developers.google.com/identity/blockstore/android" track-metadata-position="nav - credential management" track-metadata-module="tertiary nav" track-metadata-module_headline="android" tooltip > <div class="devsite-nav-item-title"> Blockstore </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/identity/smartlock-passwords/android/associate-apps-and-sites" 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track-metadata-eventdetail="https://web.dev/sign-in-form-best-practices/" track-metadata-position="nav - credential management" track-metadata-module="tertiary nav" track-metadata-module_headline="android" tooltip > <div class="devsite-nav-item-title"> Autocomplete </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Cross-platform</li> <li class="devsite-nav-item"> <a href="https://developers.google.com/identity/credential-sharing" track-type="nav" track-metadata-eventdetail="https://developers.google.com/identity/credential-sharing" track-metadata-position="nav - credential management" track-metadata-module="tertiary nav" track-metadata-module_headline="android" tooltip > <div class="devsite-nav-item-title"> Seamless credential sharing </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown "> <a href="https://developers.google.com/identity/credential-verification" track-metadata-eventdetail="https://developers.google.com/identity/credential-verification" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - credential verification" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Credential verification" track-name="credential verification" > Credential verification </a> <a href="#" role="button" aria-haspopup="true" aria-expanded="false" aria-label="Dropdown menu for Credential verification" track-type="nav" track-metadata-eventdetail="https://developers.google.com/identity/credential-verification" track-metadata-position="nav - credential verification" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Credential verification" track-name="credential verification" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></a> <div class="devsite-tabs-dropdown" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Android</li> <li class="devsite-nav-item"> <a href="https://developers.google.com/identity/sms-retriever/overview" track-type="nav" track-metadata-eventdetail="https://developers.google.com/identity/sms-retriever/overview" track-metadata-position="nav - credential verification" track-metadata-module="tertiary nav" track-metadata-module_headline="android" tooltip > <div class="devsite-nav-item-title"> Verify users by SMS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developers.google.com/identity/phone-number-hint/android" track-type="nav" track-metadata-eventdetail="https://developers.google.com/identity/phone-number-hint/android" track-metadata-position="nav - credential verification" track-metadata-module="tertiary nav" track-metadata-module_headline="android" tooltip > <div class="devsite-nav-item-title"> Phone Number Hint </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-title" role="heading" tooltip>Web</li> <li class="devsite-nav-item"> <a href="https://web.dev/web-otp/" track-type="nav" track-metadata-eventdetail="https://web.dev/web-otp/" track-metadata-position="nav - credential verification" track-metadata-module="tertiary nav" track-metadata-module_headline="android" tooltip > <div class="devsite-nav-item-title"> Verify phone numbers on the web </div> </a> </li> </ul> </div> </div> </div> </tab> </nav> </devsite-tabs> </div> <devsite-search enable-signin enable-search enable-suggestions enable-query-completion project-name="Credential Management" tenant-name="Google for Developers" project-scope="/identity/credential-management" url-scoped="https://developers.google.com/s/results/identity/credential-management" > <form class="devsite-search-form" action="https://developers.google.com/s/results" method="GET"> <div class="devsite-search-container"> <button type="button" search-open class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Open search"></button> <div class="devsite-searchbox"> <input aria-activedescendant="" aria-autocomplete="list" aria-label="Search" aria-expanded="false" aria-haspopup="listbox" autocomplete="off" class="devsite-search-field devsite-search-query" name="q" placeholder="Search" role="combobox" type="text" value="" > <div class="devsite-search-image material-icons" aria-hidden="true"> </div> <div class="devsite-search-shortcut-icon-container" aria-hidden="true"> <kbd class="devsite-search-shortcut-icon">/</kbd> </div> </div> </div> </form> <button type="button" search-close class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Close search"></button> </devsite-search> </div> <devsite-language-selector> <ul role="presentation"> <li role="presentation"> <a role="menuitem" lang="en" >English</a> </li> <li role="presentation"> <a role="menuitem" lang="de" >Deutsch</a> </li> <li role="presentation"> <a role="menuitem" lang="es" >Español</a> </li> <li role="presentation"> <a role="menuitem" lang="es_419" >Español – América Latina</a> </li> <li role="presentation"> <a role="menuitem" lang="fr" >Français</a> </li> <li role="presentation"> <a role="menuitem" lang="id" >Indonesia</a> </li> <li role="presentation"> <a role="menuitem" lang="it" >Italiano</a> </li> <li role="presentation"> <a role="menuitem" lang="pl" >Polski</a> </li> <li role="presentation"> <a role="menuitem" lang="pt_br" >Português – Brasil</a> </li> <li role="presentation"> <a role="menuitem" lang="vi" >Tiếng Việt</a> </li> <li role="presentation"> <a role="menuitem" lang="tr" >Türkçe</a> </li> <li role="presentation"> <a role="menuitem" lang="ru" >Русский</a> </li> <li role="presentation"> <a role="menuitem" lang="he" >עברית</a> </li> <li role="presentation"> <a role="menuitem" lang="ar" >العربيّة</a> </li> <li role="presentation"> <a role="menuitem" lang="fa" >فارسی</a> </li> <li role="presentation"> <a role="menuitem" lang="hi" >हिंदी</a> </li> <li role="presentation"> <a role="menuitem" lang="bn" >বাংলা</a> </li> <li role="presentation"> <a role="menuitem" lang="th" >ภาษาไทย</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_cn" >中文 – 简体</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_tw" >中文 – 繁體</a> </li> <li role="presentation"> <a role="menuitem" lang="ja" >日本語</a> </li> <li role="presentation"> <a role="menuitem" lang="ko" >한국어</a> </li> </ul> </devsite-language-selector> <devsite-user enable-profiles fp-auth id="devsite-user"> <span class="button devsite-top-button" aria-hidden="true" visually-hidden>Sign in</span> </devsite-user> </div> </div> </div> <div class="devsite-collapsible-section devsite-header-no-lower-tabs "> <div class="devsite-header-background"> <div class="devsite-product-id-row" > <div class="devsite-product-description-row"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item "> <a href="https://developers.google.com/identity/credential-management" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Credential Management" > Credential Management </a> </li> </ul> </div> </div> </div> </div> </div> </devsite-header> <devsite-book-nav scrollbars > <div class="devsite-book-nav-filter" > <span class="filter-list-icon material-icons" aria-hidden="true"></span> <input type="text" placeholder="Filter" aria-label="Type to filter" role="searchbox"> <span class="filter-clear-button hidden" data-title="Clear filter" aria-label="Clear filter" role="button" tabindex="0"></span> </div> <nav class="devsite-book-nav devsite-nav nocontent" aria-label="Side menu"> <div class="devsite-mobile-header"> <button type="button" id="devsite-close-nav" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Close navigation" aria-label="Close navigation"> </button> <div class="devsite-product-name-wrapper"> <span class="devsite-product-name"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item devsite-has-google-wordmark"> <a href="https://developers.google.com/identity" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Upper Header" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Google Identity" > <svg class="devsite-google-wordmark" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 148 48"> <title>Google</title> <path class="devsite-google-wordmark-svg-path" d="M19.58,37.65c-9.87,0-18.17-8.04-18.17-17.91c0-9.87,8.3-17.91,18.17-17.91c5.46,0,9.35,2.14,12.27,4.94l-3.45,3.45c-2.1-1.97-4.93-3.49-8.82-3.49c-7.21,0-12.84,5.81-12.84,13.02c0,7.21,5.64,13.02,12.84,13.02c4.67,0,7.34-1.88,9.04-3.58c1.4-1.4,2.32-3.41,2.66-6.16H19.58v-4.89h16.47c0.18,0.87,0.26,1.92,0.26,3.06c0,3.67-1.01,8.21-4.24,11.44C28.93,35.9,24.91,37.65,19.58,37.65z M61.78,26.12c0,6.64-5.1,11.53-11.36,11.53s-11.36-4.89-11.36-11.53c0-6.68,5.1-11.53,11.36-11.53S61.78,19.43,61.78,26.12z M56.8,26.12c0-4.15-2.96-6.99-6.39-6.99c-3.43,0-6.39,2.84-6.39,6.99c0,4.11,2.96,6.99,6.39,6.99C53.84,33.11,56.8,30.22,56.8,26.12z M87.25,26.12c0,6.64-5.1,11.53-11.36,11.53c-6.26,0-11.36-4.89-11.36-11.53c0-6.68,5.1-11.53,11.36-11.53C82.15,14.59,87.25,19.43,87.25,26.12zM82.28,26.12c0-4.15-2.96-6.99-6.39-6.99c-3.43,0-6.39,2.84-6.39,6.99c0,4.11,2.96,6.99,6.39,6.99C79.32,33.11,82.28,30.22,82.28,26.12z M112.09,15.29v20.7c0,8.52-5.02,12.01-10.96,12.01c-5.59,0-8.95-3.76-10.22-6.81l4.41-1.83c0.79,1.88,2.71,4.1,5.81,4.1c3.8,0,6.16-2.36,6.16-6.77v-1.66h-0.18c-1.14,1.4-3.32,2.62-6.07,2.62c-5.76,0-11.05-5.02-11.05-11.49c0-6.51,5.28-11.57,11.05-11.57c2.75,0,4.93,1.22,6.07,2.58h0.18v-1.88H112.09z M107.64,26.16c0-4.06-2.71-7.03-6.16-7.03c-3.49,0-6.42,2.97-6.42,7.03c0,4.02,2.93,6.94,6.42,6.94C104.93,33.11,107.64,30.18,107.64,26.16z M120.97,3.06v33.89h-5.07V3.06H120.97z M140.89,29.92l3.93,2.62c-1.27,1.88-4.32,5.11-9.61,5.11c-6.55,0-11.28-5.07-11.28-11.53c0-6.86,4.77-11.53,10.71-11.53c5.98,0,8.91,4.76,9.87,7.34l0.52,1.31l-15.42,6.38c1.18,2.31,3.01,3.49,5.59,3.49C137.79,33.11,139.58,31.84,140.89,29.92zM128.79,25.77l10.31-4.28c-0.57-1.44-2.27-2.45-4.28-2.45C132.24,19.04,128.66,21.31,128.79,25.77z"/> </svg>Identity </a> </li> </ul> </span> </div> </div> <div class="devsite-book-nav-wrapper"> <div class="devsite-mobile-nav-top"> <ul class="devsite-nav-list"> <li class="devsite-nav-item"> <a href="/identity/authentication" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Authentication" track-name="authentication" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Authentication" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Authentication </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Authentication" track-name="authentication" > <span class="devsite-nav-text" tooltip menu="Authentication"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Authentication"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/identity/authorization" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Authorization" track-name="authorization" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Authorization" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Authorization </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Authorization" track-name="authorization" > <span class="devsite-nav-text" tooltip menu="Authorization"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Authorization"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/identity/credential-management" class="devsite-nav-title gc-analytics-event devsite-nav-has-children devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Credential management" track-name="credential management" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Credential management" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Credential management </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Credential management" track-name="credential management" > <span class="devsite-nav-text" tooltip menu="Credential management"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Credential management"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/identity/credential-verification" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Credential verification" track-name="credential verification" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Credential verification" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Credential verification </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Credential verification" track-name="credential verification" > <span class="devsite-nav-text" tooltip menu="Credential verification"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Credential verification"> </span> </span> </li> </ul> </li> </ul> </div> <div class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="_book"> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Seamless credential sharing</span> </div></li> <li class="devsite-nav-item"><a href="/identity/credential-sharing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /identity/credential-sharing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/identity/credential-sharing" ><span class="devsite-nav-text" tooltip>Home</span></a></li> <li class="devsite-nav-item"><a href="/identity/credential-sharing/fundamentals" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /identity/credential-sharing/fundamentals" track-type="bookNav" track-name="click" track-metadata-eventdetail="/identity/credential-sharing/fundamentals" ><span class="devsite-nav-text" tooltip>Fundamentals</span></a></li> <li class="devsite-nav-item"><a href="/identity/credential-sharing/set-up" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /identity/credential-sharing/set-up" track-type="bookNav" track-name="click" track-metadata-eventdetail="/identity/credential-sharing/set-up" ><span class="devsite-nav-text" tooltip>Set up credential sharing</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Examples</span> </div></li> <li class="devsite-nav-item"><a href="/identity/credential-sharing/example-multiple-websites" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /identity/credential-sharing/example-multiple-websites" track-type="bookNav" track-name="click" track-metadata-eventdetail="/identity/credential-sharing/example-multiple-websites" ><span class="devsite-nav-text" tooltip>Multiple websites</span></a></li> <li class="devsite-nav-item"><a href="/identity/credential-sharing/example-multiple-websites-apps" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /identity/credential-sharing/example-multiple-websites-apps" track-type="bookNav" track-name="click" track-metadata-eventdetail="/identity/credential-sharing/example-multiple-websites-apps" ><span class="devsite-nav-text" tooltip>Multiple websites and apps</span></a></li> </ul> <ul class="devsite-nav-list" menu="Authentication" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Sign In with Google SDKs </span> </span> </li> <li class="devsite-nav-item"> <a href="/identity/android-credential-manager" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Credential Manager for Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Credential Manager for Android </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/gsi/web/guides/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Sign In with Google for Web (including One Tap)" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Sign In with Google for Web (including One Tap) </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/sign-in/ios/start" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Sign-In for iOS and macOS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Sign-In for iOS and macOS </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Industry standards </span> </span> </li> <li class="devsite-nav-item"> <a href="/identity/passkeys" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Passkeys" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Passkeys </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/openid-connect/openid-connect" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: OpenID Connect" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > OpenID Connect </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Legacy Sign In </span> </span> </li> <li class="devsite-nav-item"> <a href="/identity/one-tap/android/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: One Tap sign-up/sign-in for Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > One Tap sign-up/sign-in for Android </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/sign-in/android/legacy-start-integrating" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Sign-In for Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Sign-In for Android </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/sign-in/web/sign-in" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Sign-In for Web" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Sign-In for Web </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Authorization" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Call Google APIs </span> </span> </li> <li class="devsite-nav-item"> <a href="/identity/sign-in/android/authorize-access" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Authorizing for Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Authorizing for Android </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/oauth2/web/guides/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Authorizing for Web" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Authorizing for Web </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/sign-in/ios/api-access" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Authorizing for iOS/macOS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Authorizing for iOS/macOS </span> </a> </li> <li class="devsite-nav-item"> <a href="/identity/protocols/oauth2" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Using OAuth 2.0" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Using OAuth 2.0 </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Share data with Google apps and devices </span> </span> </li> <li class="devsite-nav-item"> <a href="/identity/account-linking" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Google Account Linking" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Google Account Linking </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Credential management" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Android </span> </span> </li> <li 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</devsite-feedback> <h1 class="devsite-page-title" tabindex="-1"> Set up seamless credential sharing across Android apps and websites </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <div class="devsite-article-body clearfix "> <p>Maximize user convenience by enabling cross-platform seamless credential sharing across your apps and websites. When multiple websites and Android apps share an account management backend, this feature allows users to save credentials once and have them automatically suggested on any linked website or Android app.</p> <h3 id="best-practices" data-text="Best practices" tabindex="-1">Best practices</h3> <p>For optimal user experience and security, implement seamless credential sharing across these touchpoints:</p> <ul> <li><strong>Sign-in form</strong>: Enable automatic credential filling.</li> <li><strong>Sign-up form</strong>: Securely store new credentials for use across platforms.</li> <li><strong>Password change form</strong>: Synchronize password updates across all platforms.</li> <li><strong>Password reset form</strong>: Allow single password resets to update all platforms.</li> <li><strong>Webview domains</strong>: Extend credential sharing to <a href="/develop/ui/views/layout/webapps">webview domains</a> within your app that handle account management (host sign-in, sign-up, password change, or password reset forms).</li> <li><strong>Android apps</strong></li> </ul> <p>This approach creates a unified credential management system, enhancing both user convenience and security.</p> <p>When designing your account management websites, we suggest you follow these best practices for account management sites:</p> <ul> <li><a href="https://web.dev/articles/sign-up-form-best-practices">Design your sign-up form in accordance with best practices</a></li> <li><a href="https://web.dev/articles/sign-in-form-best-practices">Design your sign-in form in accordance with best practices</a></li> <li><a href="https://web.dev/articles/change-password-url">Add a well-known URL for changing passwords</a></li> </ul> <p>When designing your Android apps, we recommend you <a href="/training/sign-in/passkeys">integrate your app with Android Credential Manager</a>.</p> <h3 id="prerequisites" data-text="Prerequisites" tabindex="-1">Prerequisites</h3> <p>Before setting up seamless credential sharing, ensure you have the following for each platform:</p> <p>For each Android app:</p> <ul> <li>The <a href="/build/configure-app-module">Android application ID</a>, as declared in the app's <code translate="no" dir="ltr">build.gradle</code> file.</li> <li>The <a href="/studio/publish/app-signing#sign-apk">SHA256 fingerprints</a> of the signing certificate.</li> <li>(Recommended) User sign-in implemented <a href="/training/sign-in/passkeys">with the Credential Manager API</a>.</li> </ul> <p>For each website:</p> <ul> <li>Ability to publish a <code translate="no" dir="ltr">/.well-known/assetlinks.json</code> file on each respective domain, following the <a href="https://developers.google.com/digital-asset-links/v1/statements">Digital Asset Links (DALs) syntax</a>.</li> <li>All account management domains (sign-in, sign-up, password change, or password reset forms) must be accessible over HTTPS.</li> </ul> <aside class="note"><strong>Note:</strong><span> Chrome automatically shares saved credentials between <a href="https://web.dev/articles/same-site-same-origin">same-site</a> websites (for example, <code translate="no" dir="ltr">www.example.com</code> and <code translate="no" dir="ltr">m.example.com</code>).</span></aside> <h3 id="configure" data-text="Enable seamless credential sharing across Android apps and websites" tabindex="-1">Enable seamless credential sharing across Android apps and websites</h3> <p>To configure seamless credential sharing across apps and websites, you create and publish <a href="https://developers.google.com/digital-asset-links/v1/create-statement#website_statement_file">Digital Asset Links statement lists</a> that declare which entities (websites or Android apps) are allowed to share credentials.</p> <aside class="special"><strong>Important:</strong><span> Password Manager treats credential sharing relationships as transitive.</span></aside> <p>To declare a credential sharing relationship:</p> <ol> <li><p>Create an <code translate="no" dir="ltr">assetlinks.json</code> file with statements linking to the website and to the Android app, following the <a href="https://developers.google.com/digital-asset-links/v1/statements">DALs statement list syntax</a>:</p> <pre class="prettyprint lang-JSON" translate="no" dir="ltr"><code translate="no" dir="ltr">[ { "relation":[ "delegate_permission/common.get_login_creds" ], "target":{ "namespace":"web", "site":<var translate="no">URL</var> } }, { "relation":[ "delegate_permission/common.get_login_creds" ], "target":{ "namespace":"android_app", "package_name":"<var translate="no">APP_ID</var>", "sha256_cert_fingerprints":[ "<var translate="no">SHA_HEX_VALUE</var>" ] } } ] </code></pre> <p>Where <code translate="no" dir="ltr"><var translate="no">URL</var></code> is your site's URL, <code translate="no" dir="ltr"><var translate="no">APP_ID</var></code> is your <a href="/build/configure-app-module">Android application ID</a>, and <code translate="no" dir="ltr"><var translate="no">SHA_HEX_VALUE</var></code> is the SHA256 fingerprint of your Android app <a href="/studio/publish/app-signing#sign-apk">signing certificate</a>.</p> <p>The <code translate="no" dir="ltr">relation</code> field describes the relationship being declared. To declare that apps and sites share sign-in credentials, specify the relationships as <code translate="no" dir="ltr">delegate_permission/common.get_login_creds</code>. Learn more about <a href="https://developers.google.com/digital-asset-links/v1/relation-strings">Relation Strings in DALs</a>.</p> <p>The <code translate="no" dir="ltr">target</code> field is an object that specifies the asset the declaration applies to.</p> <p>The following fields identify a website:</p> <table> <tr> <td><p><code translate="no" dir="ltr">namespace</code></p></td> <td><p><code translate="no" dir="ltr">web</code></p></td> </tr> <tr> <td><p><code translate="no" dir="ltr">site</code></p></td> <td><p>The website's URL, in the format <code translate="no" dir="ltr">https://domain[:optional_port</code>]; for example, https://www.example.com.</p><p>The <code translate="no" dir="ltr">domain</code> must be fully-qualified, and <code translate="no" dir="ltr">optional_port</code> must be omitted when using port 443 for HTTPS.</p><p>A <code translate="no" dir="ltr">site</code> target can only be a root domain: you cannot limit an app association to a specific subdirectory. Don't include a path in the URL, such as a trailing slash.</p><p>Subdomains are not considered to match: that is, if you specify the <code translate="no" dir="ltr">domain</code> as www.example.com, the domain www.counter.example.com is not associated with your app.</p></td> </tr> </table> <p>The following fields identify an Android app:</p> <table> <tr> <td><p>namespace</p></td> <td><p>android_app</p></td> </tr> <tr> <td><p>package_name</p></td> <td><p>The package name declared in the app's manifest. For example, com.example.android</p></td> </tr> <tr> <td><p>sha256_cert_fingerprints</p></td> <td><p>The SHA256 fingerprints of your app's <a href="/studio/publish/app-signing#sign-apk">signing certificate</a>.</p></td> </tr> </table> <aside class="special"><strong>Important:</strong><span> When establishing seamless credential sharing between a website and an Android app, we include a self-referential statement in the website's <code translate="no" dir="ltr">assetlinks.json</code> file. This is necessary because the Android app manifest references this file during subsequent configuration steps to enable password sharing.</span></aside></li> <li><p>Host the Digital Asset Links JSON file at the following location on the sign-in domains: <code translate="no" dir="ltr">https://<var translate="no">DOMAIN</var>[:<var translate="no">OPTIONAL_PORT</var>]/.well-known/assetlinks.json</code> , where <code translate="no" dir="ltr"><var translate="no">DOMAIN</var></code> is fully-qualified, and <code translate="no" dir="ltr"><var translate="no">OPTIONAL_PORT</var></code> must be omitted when using port 443 for HTTPS.</p> <aside class="note"><strong>Note:</strong><span> The Digital Asset Links JSON file must be served as <code translate="no" dir="ltr">Content-Type: application/json</code> in the HTTP headers, and it cannot be a redirect (see, <a href="https://developers.google.com/digital-asset-links/v1/create-statement#website_statement_file">Creating a Statement List</a>).</span></aside></li> <li><p>Declare the association in the Android app by embedding a statement in your Android app's <code translate="no" dir="ltr">res/values/strings.xml</code> file that links to the statement list you created in Step 1. Add an object that specifies the <code translate="no" dir="ltr">assetlinks.json</code> files to load. For example:</p> <pre class="prettyprint lang-XML" translate="no" dir="ltr"><code translate="no" dir="ltr"> <string name="asset_statements" translatable="false"> [{ \"include\": \"https://<var translate="no">DOMAIN</var>[:<var translate="no">OPTIONAL_PORT</var>]/.well-known/assetlinks.json\" }] </string> </code></pre> <p>Replace <code translate="no" dir="ltr"><var translate="no">DOMAIN</var></code> and <code translate="no" dir="ltr"><var translate="no">OPTIONAL_PORT</var></code> (must be omitted when using port 443 for HTTPS)—for example <code translate="no" dir="ltr">https://www.example.com</code>. Escape any apostrophes and quotation marks you use in the string.</p> <p>You can also add a JSON snippet in your <code translate="no" dir="ltr">strings.xml</code> file as shown in <a href="https://developers.google.com/digital-asset-links/v1/create-statement#android_app_statement_file">the DALs documentation</a>, but using the <code translate="no" dir="ltr">include</code> statement lets you change statements <em>without publishing a new version of your app</em>.</p></li> <li><p>Reference the statement in the manifest by adding the following line to your app's <code translate="no" dir="ltr">AndroidManifest.xml</code> file under <code translate="no" dir="ltr"><application></code>:</p> <pre class="prettyprint lang-XML" translate="no" dir="ltr"><code translate="no" dir="ltr"><meta-data android:name="asset_statements" android:resource="@string/asset_statements"/> </code></pre></li> <li><p>Publish the new version of your Android app to the Google Play Developer Console</p> <aside class="special"><strong>Important:</strong><span> Seamless credential sharing will take effect only after you publish a new version of your Android app that includes a reference to the <code translate="no" dir="ltr">assetlinks.json</code> file hosted on your website.</span></aside></li> </ol> <p>After following these steps, you have successfully set up seamless credential sharing between your website and your Android app.</p> <p>Note that this is not the only valid way to set up DALs for credential sharing, but this approach simplifies the future process of adding new entities to your seamless credential sharing network, promotes code reusability, and reduces the potential for errors during updates.</p> </div> <devsite-recommendations display="in-page" hidden yield> </devsite-recommendations> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-feedback position="footer" project-name="Credential Management" product-id="5186570" bucket="Identity guides" context="External devsite feedback" version="t-devsite-webserver-20241114-r00-rc02.464922260396498922" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="footer" class="nocontent" project-icon="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/developers/images/touchicon-180-new.png" > <button> Send feedback </button> </devsite-feedback> <devsite-recommendations id="recommendations-link" yield></devsite-recommendations> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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