Firebase Authentication aims to make building secure authentication systems easy, while improving the sign-in and onboarding experience for end users . It provides an end-to-end identity solution, supporting email and password accounts, phone auth, and Google, Twitter, Facebook, and GitHub login, and more.
Read moreHow do I fix this app is not authorized to use Firebase authentication?
Make sure you add the SHA1 key from Play Console to your app in the Firebase Console.
Read moreHow do I authenticate Firebase in flutter?
Implementing Firebase Authentication in a Flutter app
Read moreHow do I know if my Firebase is authenticated?
“firebase auth check if user is logged in” Code Answer
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