title: GCM: Using same account on multiple devices - what happens?
body: <p>I have a question concerning Google Cloud Messaging.</p>
  
  <p>When I install the same app, on two different google android devices with same google account - then both will register themselves in gcm. i am storing their regId on server.</p>
  
  <p>but what happens when I send to one of the regid a message - will the second get the message too? -will one of the regid be canonical? (because of same google account on device like the other - or are they treated completely different?)</p>