Google Sign-In, Firebase, and several Google APIs require the SHA-1 or SHA-256 fingerprint of an Android signing certificate. With Google Play App Signing enabled, the production app may be signed with Google’s app signing key rather than your local upload keystore, so production fingerprints should be copied from Google Play Console.
Open App Integrity and Play App Signing
- Open the app in Google Play Console. From the left navigation, select
App integrity. On the right, selectPlay app signing, then openSettings.

- The app signing certificate and its SHA-1 fingerprint are displayed on that page.
