title: Uniquely identify Android Emulators
body: <p>I installed emulators(sdk) on different different systems, and all are connected to one server. All emulators are build by the same set of code and resources.
  I need to identify these emulators uniquely for testing purpose. I tried to get system username, but it is empty string kw. </p>
  
  <p>For actual devices, we can get IMEI number. But for emulators, is there a way exists? I know it is a strange doubt. Please share some tips about this.</p>
  
  <p>Thanks in advance,
  Joe</p>