NYU may have been the first
to put the mouthful that is frustrated total internal reflection (FTIR) to use in a multi-touch display, but it's not the only one experimenting with the curiously-named technology, with the folks at tinker.it building a setup of their own and explaining how they did it. As the video after the break shows, the end result is slightly less polished than NYU's device, but it puts on an impressive light show nonetheless, tracking your fingers' movement in a suitably hypnotic fashion. While tinker.it's guide doesn't exactly hold your hand though the process, those with the necessary skills should be able to build their own rig relatively easily, with some coffee table excess
seemingly only a few more steps away for those with the carpentry skills to match.