The product, called Tap, looks like a string-equivalent of brass knuckles. You place your fingers through fabric loops that are linked together by short nylon straps. There's a larger loop for the thumb that also houses a haptic motor and a sensor that turns it into a mouse. The idea is to free up your human computer interface from a standard keyboard by using your fingers to type on any surface. It may also become a new interface for playing games. Read more and see a video here: https://www.cnet.com/news/this-wearable-tap-turns-your-fingers-into-a-bluetooth-keyboard/#page-iphone-x-reveals-the-secrets-of-iphones-yet-to-come.