OAuth Login
OAuth allows users to log in to your React Native application using an existing account from a third-party provider such as Google, Facebook, or Apple, without creating a new password.
What is OAuth?
OAuth is an authorization protocol that allows a third-party provider to verify a user’s identity and grant your application limited access to their account information, without exposing their password.
Google Sign-In Setup
Google Sign-In typically requires installing a dedicated library and configuring OAuth client IDs through the Google Cloud Console.
Implementing Google Sign-In
Sending the OAuth Token to Your Backend
After receiving the OAuth provider’s token, it should be sent to your own backend server, which verifies the token with the provider and issues your application’s own session token.
Apple Sign-In Requirements
Apps distributed through the Apple App Store that offer any third-party login option are generally required by Apple to also offer Sign in with Apple as an option.
Facebook Login
Facebook Login follows a similar pattern, requiring the react-native-fbsdk-next library and configuration through the Facebook Developer Console.
Conclusion
OAuth login significantly reduces friction during account creation and sign-in by allowing users to authenticate with existing accounts they already trust, such as Google or Apple, rather than creating new credentials.
