FingerIO Brings Gesture Control to Devices

Mar-18-16 The FingerIO sonar-based gesture control system could one day see us controlling our mobile devices by making gestures on nearby surfaces, or even in mid-air.

Developed by engineers at the University of Washington, the FingerIO app uses the device’s own speakers and microphone, emitting an inaudible sound wave that bounces off the user’s fingers. As the sound wave bounces, the echoes are detected by the microphone and used to determine the position and shape of the hand.

According to the team, the system can track two-dimensional finger gestures up to 8mm, and because the sound waves do not need line of sight, the system can work even while the device is in a pocket or under clothing.

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