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The Auth Blocking functions Quickstart demonstrates how to block account sign in and creation when using Firebase Auth or Google Cloud Identity Platform in a Firebase App.

• Read more about auth blocking functions
• Read more about Cloud Functions for Firebase

To try this sample, you need a test app with Firebase Auth and Cloud Firestore enabled. Don't use a live app with real users!

1. Install dependencies with npm install
2. Deploy the functions with firebase deploy --only functions
3. Try to create an account using an email address with a domain other than @acme.com. It should fail.
4. Add an existing user's email address to the banned collection in Cloud Firestore. Then, try to sign in as that user. It should fail.

© Google, 2022. Licensed under an Apache-2 license.