Google 收到開發人員的回應之一,是關於 FedCM 自動登入流程的使用者手勢要求。為提升隱私權,Chrome 會要求使用者在每個 Chrome 執行個體中,重新確認是否要使用 Google 帳戶登入網站,即使使用者在 FedCM 推出前已核准該網站也一樣。這項一次性的重新確認作業,只要點按一次 One Tap 提示,即可完成,藉此證明使用者有意登入。這項變更可能會導致部分網站的自動登入轉換率初期出現中斷。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間:2025-03-17 (世界標準時間)。"],[[["\u003cp\u003eGoogle Identity Services JavaScript library now supports Federated Credential Management (FedCM) to improve automatic sign-in flows, though reconfirmation may be required initially for enhanced privacy.\u003c/p\u003e\n"],["\u003cp\u003e"Sign in with Google" button now supports Family Link and adheres to Google Workspace policies.\u003c/p\u003e\n"],["\u003cp\u003eAMP support has been removed when FedCM is enabled.\u003c/p\u003e\n"],["\u003cp\u003eChrome users may need to reconfirm sign-in with Google Account in each instance for privacy reasons, with exceptions based on third-party cookie settings.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers are encouraged to migrate to FedCM to minimize potential disruptions to automatic sign-in conversion rates.\u003c/p\u003e\n"]]],[],null,["# Sign In With Google Release Notes\n\nThis page contains a list of the new features and significant changes to the\nGoogle Identity Services JavaScript library.\n\n2025-03-17\n----------\n\n- [Sign in with Google button](/identity/gsi/web/guides/personalized-button) supports [Federated Credential Management (FedCM)](https://developers.google.com/privacy-sandbox/cookies/fedcm) and adhere to [Google Workspace](https://workspace.google.com/) policies set by the organization's administrator.\n\n2024-12-01\n----------\n\n- [Sign in with Google button](/identity/gsi/web/guides/personalized-button) supports [Family Link](https://families.google/familylink/) and adhere to [Google Workspace](https://workspace.google.com/) policies set by the organization's administrator.\n\n2023-12-21\n----------\n\n- [Federated Credential Management (FedCM) Beta](https://developers.googleblog.com/2023/08/announcing-federated-credential-management-beta-for-gis.html) for Google Identity\n Services was launched in August 2023. Many developers tested the API and have\n provided valuable feedback.\n\n One response Google heard from developers is about the FedCM automatic sign-in\n flow user gesture requirement. For improved privacy, Chrome requires users to\n reconfirm that they want to sign in to the website with Google Account in each\n Chrome instance even if the user approved the website prior to the FedCM\n rollout. This one-time reconfirmation is achieved through a single click of\n the One Tap prompt to demonstrate user intent to sign-in. This change may\n cause an initial disruption in automatic sign-in conversion rates for some\n websites.\n\n Recently in M121, Chrome made a [change](https://developers.google.com/privacy-sandbox/3pcd/fedcm-updates#chrome_121_december_2023) to the FedCM automatic sign-in\n flow UX. The reconfirmation is only required when third-party cookies are\n restricted. This means:\n 1. Before third-party cookie restrictions are ramped up to 100% (see Privacy\n Sandbox [News and Update](https://privacysandbox.com/news/) page for latest timeline),\n FedCM automatic sign-in does not require reconfirmation for returning users.\n If users reconfirm with FedCM UI, this reconfirmation will count toward the\n user gesture requirement.\n\n 2. FedCM automatic sign-in will check the confirmation status when the\n third-party cookies are manually restricted by users today, or by default in\n future Chrome.\n\n With this change, we recommend all automatic sign-in developers migrate to\n FedCM as soon as possible, to reduce disruption to automatic sign-in\n conversion rates.\n\n For the automatic sign-in flow, GIS JavaScript won't trigger FedCM on an older\n Chrome (before M121), even if your website chooses to opt-in to FedCM.\n\n2023-08-15\n----------\n\n- Added [support](/identity/gsi/web/guides/supported-browsers#third-party_cookies) for the Federated Credential Management API (FedCM).\n- [Accelerated Mobile Pages](/identity/gsi/web/amp/amp) is unsupported. AMP is not available when FedCM is enabled.\n\n2022-04-12\n----------\n\n- [Upgraded One Tap UX on ITP browsers](/identity/gsi/web/guides/features#upgraded_ux_on_itp_browsers) is supported.\n\n2021-4-13\n---------\n\n- [Sign In With Google button](/identity/gsi/web/guides/personalized-button) is supported.\n\n2021-03-17\n----------\n\n- [Accelerated Mobile Pages](/identity/gsi/web/amp/amp) is supported.\n\n2020-3-24\n---------\n\n- [Exponential Cool Down](/identity/gsi/web/guides/features#exponential_cool_down) is supported."]]