how to check google play services sha1 value - setting up google play services

find more info here: https://developers.google.com/games/services/console/enabling

here are some quck notes:

To get the release certificate fingerprint:

keytool -exportcert \
-alias <your-key-name> \
-keystore <path-to-production-keystore> \
-list -v

To get the debug certificate fingerprint:

keytool -exportcert \
-alias androiddebugkey \
-keystore <path-to-debug-keystore> \
-list -v

other links : 

https://developers.google.com/games/services/android/quickstart#step_3_modify_your_code

https://code.google.com/p/google-plus-platform/issues/detail?id=554

http://stackoverflow.com/questions/16580885/google-play-game-services-unable-to-sign-in

http://gmc.yoyogames.com/index.php?showtopic=581853&page=7