title: whats alternative to UDID?
body: <p>I am developing a android application  for a exploratory project using client server architecture. I thought of using UDID but now its replaced by new "Advertising ID", but in my application, i need to store data about user on server with some unique ID per device.
  so what should i use as alternative to UDID? 
  i checked open UDID but that is also outdated now.
  Using "advertising ID" imposes problem of consistency when user clears/resets his advertising ID.</p>
  
  <p>Request the community to help me out.</p>