A unique identifier associated with a player.
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 10.0+
- watchOS 3.0+
This property when accessed by
GKLocalPlayer displays the user's Game Center account name, which is created on account creation. When this property is accessed by
GKCloudPlayer, a unique identifier is returned that is created for each app / container combination.