Google yesterday integrated the Sign in with Apple authentication, in beta, on the latest versions of the Firebase SDKs for iOS, Android, and the web.

Sign in with Apple enables users to sign in to applications and websites using their Apple ID.

The Firebase Authentication (via Firebase SDKs) provides an end-to-end identity solution for applications, which allows developers to authenticate and verify users with passwords, phone numbers and popular federated identity providers such as Google, Facebook, Twitter, Microsoft, and now Apple.

Google integrates Sign in with Apple in Firebase Auth