Can you use Google’s Firebase only for authentication? – Quora. Sure, if you want. From the docs: “After a successful sign in, you can access the user’s basic profile information , and you can control the user’s access to data stored in other Firebase products.
Read moreDoes Firebase authentication use OAuth2?
You need to have the user go through the OAuth 2.0 auth code flow and grant access to your app. … This token will allow the user to sign-in into Firebase in our web app using the signInWithCustomToken method.
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