Re: Projector keyboards!!!
It's so neat though. That wall input idea is another method to using this technology. It's basically the idea of a touchpad, but it's not a touchpad at the same time because there is no pad or any object but a flat surface like a wall, table, etc. The keyboard outline is just an imaginary template so the person know where to put his fingers at and the laser sensors simply pick up the finger within a certain parameter and sends the signal back to the PC via wireless IR or Bluetooth.
*Fact: Microsoft Window's Blue Screen of Death vs Computerforums.org's White Screen of Death. Which is worse?