If the username points to the account ID then anyone choosing the same username will not login to a new account - but one that already exists. The password then confirms the authenticity of the new user.
My own network games determine whether to create a new user account based upon whether the username typed in already exists. I have no New User button...
My own network games determine whether to create a new user account based upon whether the username typed in already exists. I have no New User button...