NYU's Multi-Touch Sensing through Frustrated Total Internal Reflection Display is way cooler than Trivia Whiz or Photo Hunt. Using a rear-projector that throws an image onto a screen similar in composition to fingerprint scanners, Jeff Han and his team at the Media Research Laboratory have built a scalable system that allows multiple points of input by one or more users. Some of the stuff they do in the video is wild, such as two-handed scratching of digital turntables, and future iterations of the project will attempt finger-specific recognition for an even higher degree of flexibility.