title: Have to log in to GameCenter every time you start in sandbox mode
body: <p>I am testing in the sandbox mode on the simulator and on a real device. Whenever I need to log in, it always prompts me for a password. This is unlike other games I have played where it simply logs you in and lets you play. I am thinking this might be related to the fact it's a test in the sandbox mode of GameCenter?</p>
  
  <p>Can anyone confirm? Would hate to launch a product and have it be this way.</p>