The local user (potentially not logged in).
Until the user logs in or authenticates themself, the profile data will be invalid and no other Social API functionality will work.
using UnityEngine; class c { void foo() { Social.localUser.Authenticate (success => { if (success) { Debug.Log ("Authentication successful"); string userInfo = "Username: " + Social.localUser.userName + "\nUser ID: " + Social.localUser.id + "\nIsUnderage: " + Social.localUser.underage; Debug.Log (userInfo); } else Debug.Log ("Authentication failed"); }); } }