Nod

Nod is a gesture control ring developed by Nod Labs. Nod can be used as a Virtual Reality input device. This wearable device is worn on one of your fingers. User can wear two at a time, one on each hand. Equipped with sensors, processors and a bluetooth antenna, the ring allows its user to control and interact with various devices, such as a computer screen or VR HMD, by waving, pointing and gesturing with his or her finger.