The title says it all. I had looked for this information on the internet but not found it. This is the displayName that you specify in GKSession’s initWithSessionID:displayName:sessionMode:
method, and that you retrieve with displayNameForPeer:
- (id)initWithSessionID:(NSString *)sessionID displayName:(NSString *)name sessionMode:(GKSessionMode)mode - (NSString *)displayNameForPeer:(NSString *)peerID
You can pass a string of any length into initWithSessionID:displayName:sessionMode:
, but it will be truncated to 40 characters when you retrieve it with displayNameForPeer: