Augmented reality is a long way off from widespread adoption, but Facebook is already working on novel ways to control it. Its solution is a wrist-bound wearable EMG that translates the electrical motor nerve signals that move your hand into digital commands. As a result, it can measure finger movements as small as 1mm and facilitate everything from on-screen keyboards to shooting a bow in a game. In addition, it also works for those who have lost an appendage, opening avenues for disability access. As a developmental device, there are no current plans for commercialization.