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Google Identity Services is our new cross-platform sign-in SDK for Web and Android apps, supporting and streamlining multiple types of credentials.

Seamless sign-in and sign-up flows

Add a personalized and customizable sign-up or sign-in button to your website.
Sign up new users with just one tap, without interrupting them with a sign-up screen. Users get a secure, token-based, passwordless account on your site, protected by their Google Account.
Sign users in automatically when they return to your site on any device or browser, even after their session expires.