title: Android: How AirDroid app does work?
body: <p>Hello I am going to develop an app like <a href="https://market.android.com/details?id=com.sand.airdroid" rel="noreferrer">"AirDroid"</a> on Android Market which connect a device with the PC using wireless communication.</p>
  
  <p>Can anybody explain to me how this app works?
  Is Internet required for that or not? and from where that window which display the content of the device in PC, comming from to explore the Device?</p>
  
  <p>Is it Internet required for that or any server manages that?</p>
  
  <p>Thanks.</p>