Tired of janky game controllers? Perhaps your forearm or forehead might be more appropriate. Desney Tan and Scott Saponas recently demoed Skinput, their technology that creates an interface using “bio-acoustics” to create touch-sensitive surfaces of our body. It’d be a bit like touching your fingers to your neck to deliver a finishing move in Hitman: “We’ve made cool technologies that profoundly shape how we live. The bottleneck is in the interface. The challenge is to create richer ways for humans and computers to communicate,” says Tan.