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This Mobile Sonar Technology Can Enable Finger-Tracking Gadgets

FingerIO is an impressive mobile sonar technology, developed by a group of scientists over at the University of Washington, that is designed to make it possible to transform mobile devices into high-tech sonar systems by using futuristic finger movement-tracking technology.

The technology works by transmitting sound waves from speakers that bounce off the user's finger as they're moving it on a surface or on mid-air, with the resulting echoes being detected by a pair of microphones. By figuring out the amount of time that passes between the release of the waves and the receipt of their echoes, the finger's position can be calculated highly accurately.

This mobile sonar conversion technology could have a wide variety of applications and could be used in consumer electronics such as smartphones and music players.