Introducing Nod, The Gesture Control Wearable Ring (Video)
It is quite ironic that Nod has nothing to do with your head but its meant to use on your finger as a gesture control device. Developed by a company with the same name, Nod allows you to control your home appliances with the simple gesture movement of your hand; similar to those you would use when playing an Xbox or Wii game. The Nods tuchless capability allows you to interact with TV via your set-top box to control whats on your screen.