Firebase authentication for database write permission

[TIMAI2]

You might have a good read here:

Firebase Database and Storage: with the Web Component - Secure Rules

[fb] This is one of those, could it be done.... did I need to use the built-in firebase component, or the extensions available, in order to use Firebase database and storage, and operate secure rules. Well after some research and testing, it turns out that it could be done. Find out how: Firebase with a Web Component . . . My thanks @ChrisWard for proof reading and suggestions [EDIT - Now updated to include the new PATCH feature of the web component]

and here

"Subvert" Firebase Authentication or (One Authenticated User for Multiple User Logins)

[firebaselogo] This one has been tinkling about in my head for a few months, finally got around to committing it to "paper". In essence, this guide demonstrates how to use one firebase authenticated user to authenticate your app with Firebase with secure rules, and to then allow the sign up and sign in of users, who can have a range of read / write permissions, depending on how you setup your app. AIA file now provided. Subvert Firebase Authentication

For Security Rules see here:

https://firebase.google.com/docs/database/security

Group Security in the Firebase Database