title: Send a unique Identifier from IOS Device to a webservice
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/227590/unique-identifier-for-an-iphone-app">Unique identifier for an iPhone app</a>  </p>
  </blockquote>
  
  
  
  <p>We are building an IOS application that was intended to use the device's serial number as a unique identifier to identify if a device is licenced or not. But according to <a href="https://stackoverflow.com/questions/7127614/retrieving-the-serial-number-from-the-device%20it%20seems%20that%20applications%20reading%20the%20serial%20number%20are%20not%20allowed%20on%20the%20appStore,%20and%20this%20feature%20is%20even%20deprecated">this</a> the unique identifier is deprecated in iOS 5.</p>
  
  <p>Is there any other identifier we could use to uniquely identify devices?</p>