"Vollee developed a special interface that runs on the iPhone for the game that collects information from the WoW servers, then the gameplay part shown is streamed from a special instance of the game running on your computer and is compressed through Vollee's servers so there's lag that's less than a second. So Vollee develops a special interface, creates playable controls, and compresses the video so it looks smooth. There's no way that this could be playable over VNC. Over wifi this will be really smooth."
http://toucharcade.com/2009/04/25/wo...real/#comments