# Google Play Services Authentication

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### Why sign in fails?&#x20;

For Google Play Services to sign in successfully, you need to make sure the apk from where you are logging in should be allowed to make requests to google servers.

{% hint style="danger" %}
If you are sure the SHA fingerprints are setup correctly, make sure your testing email account is listed in the play services testers list in google play console.
{% endhint %}

### How to make the APK authorized to make requests to google servers?&#x20;

Each apk built with a keystore has a SHA fingerprint. You need to make sure the SHA fingerprint is added in the google cloud.&#x20;

You can fetch it with keytool command (check [here](/features/game-services/faq.md#what-are-different-sha-fingerprints-that-needs-to-be-used-for-logging-in-successfully-on-different-environments-and-how-to-create-them) on how to get SHA for each environment )

### How many SHA fingerprints I need to add for successful authentication?&#x20;

In Unity,&#x20;

1\. Development build uses android default debug keystore.&#x20;

2\. Release build uses the keystore you set in publishing settings of player settings&#x20;

3\. Google play store build which uses google play signing.&#x20;

So in total 3 environments (dev, release and production). If you want all the above builds to authenticate successfully, add all 3 fingerprints.

### How to get each environment's SHA?&#x20;

1\. Debug ( keytool -list -v -keystore "PATH\_TO\_DEBUG\_KEYSTORE" -alias androiddebugkey -storepass android -keypass android)&#x20;

2\. Release (Get from Google play console -> Your App -> Setup -> App signing -> Upload key certificate )

&#x20;3\. Apk/AAb downloaded from Google play store (Get from Google play console -> Your App -> Setup -> App signing -> App signing key certificate )

### Where to add these SHA fingerprints?&#x20;

Google Play Console. Check [here](/features/game-services/setup/android.md#adding-a-sha-fingerprint) for details on how to add a SHA fingerprint.


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