Six years ago, multitouch devices went mainstream, and changed the industry and our lives. However, our fingers can do so much more than just poke and pinch at screens. FingerSense is an enhancement to touch interaction that allows conventional screens to know how the finger is being used for input: fingertip, knuckle or nail. This opens several new and powerful interaction opportunities for touch input, especially in mobile devices, where input bandwidth is limited due to small screens and fat fingers. For example, a knuckle tap could serve as a “right click” for mobile device touch interaction.