Hi,

I'm using device authenticating for a month in my game and sometimes I noticed that it create another user when a start it again

It uses Unity 3D and occurred on iOS, Android, WP8, Windows, etc. Here is the flow:

1 – Wait until GameSparksApi.isAvailable

2 – If not logged GameSparksApi.isAuthenticated

3 – Call DeviceAuthenticationRequest with SetDisplayName(“random name”)

I read on another post that GS uses Unity SystemInfo.deviceUniqueIdentifier, what could cause this behavior?

Yes, actually never tested on simulator.

Unfortunately I never saved any logs when this happen because it didn't show as an error, or I was using the device without debugging it.

It seems that the game simply lost the authentication key, which I a presume is the one saved in the Player Prefs, and request another device authentication. Although sometimes I noticed that server return the right user even if request another DeviceAuthentication.

I’ll save the logs when this happen next time.