We can think of more than one situation when you wouldn't want to touch your phone because of what's on your hands. Imagine needing to quickly consult a recipe on your tablet when your fingers are covered in sticky, tech-unfriendly dough. That's where a device like Bixi comes in, since it brings wireless gesture controls to your iOS and Android devices. Bixi is a little puck that uses time of flight sensors to monitor the movement of your hand in the 25 centimeters or so of air above it. It's not just for on-screen tasks, either, since Bixi can also be used to interact with plenty of smart home apps via your smartphone.