title: Check programmatically if contact allows FaceTime in Objective-C or Swift
body: <p>Just like the title states, I am working on contacts app. What I would like to know is if there is a way for me to find out if the contacts are reachable through FaceTime? Is there a public API for it? (Note: Solutions like ChatKit.framework for iMessage are not really acceptable, i.e. private APIs)</p>
  
  <p><strong>UPDATE:</strong>  found a post here, that partially answers the question: <a href="https://stackoverflow.com/questions/9888946/check-if-facetime-is-enabled-on-the-device">FaceTime programmatically</a></p>
  
  <p><strong>UPDATE #2:</strong>  using @"//facetime:" scheme does not seem to work at all, as I always get <strong>true</strong> in return</p>
  
  <pre><code>UIApplication.sharedApplication().canOpenURL(NSURL(string: "facetime://0000000000")!)
  </code></pre>