title: Show virtual Keyboard when bluetooth keyboard connected?
body: <p>I am building system for my company that use of a bluetooth RFID reader.
  The problem is we cannot show the keyboard when the reader is connecting unless we turn it off.</p>
  
  <p>But I saw this video
  <a href="http://www.youtube.com/watch?v=0uRlIw5H0wE&amp;feature=related" rel="nofollow noreferrer">http://www.youtube.com/watch?v=0uRlIw5H0wE&amp;feature=related</a></p>
  
  <p>And I know we can modify the reader to temperately show the keyboard. 
  (Just like the button on Apple iOS keyboard)
  <img src="https://i.stack.imgur.com/Cc9Hg.jpg" alt="Media Key of toggle keyboard"></p>
  
  <p>We can ask the provider to taylor-made the reader. So we want to add a physical button on it. </p>
  
  <p>Do anyone know the keycode of that button?
  Can it be done just to add a button to send a keycode event???</p>