With their project “SkinTrack,” researchers at Carnegie Mellon University have developed a way to expand the interface of smartwatches outside of just the screen and onto human skin. SkinTrack requires users to tie a slim, ring-like device to their finger, allowing a smart watch to track its movement. From there, games like Angry Birds or even just dialing a phone number can be done completely on the wrist. Watch it in action at the MIT Technology Review.
Use Your Skin as a Smartwatch Interface With SkinTrack