Instances of SC_User model the game user.
Scoreloop considers users to be unique players tied to unique devices. Instances of SC_Session maintain an instance of the local user, referred to as the session user.
Instances of SC_User that are not the session user may not have all properties available.
However, the login property is always available.
Instances of SC_User are available from:
The Scoreloop session - SC_Session_GetUser()
An instance of SC_Challenge :
SC_User objects are managed by two controllers: