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The smartphone controlled by gestures

10 October 2013 Last updated at 15:20 BST

BBC Click's Spencer Kelly takes a look at a prototype gesture-control system that uses ultrasound to respond to soundwaves created by hand movements.

Ultrasound chip offers gesture control for mobiles

Keep up to date with all the latest gadgets and tech news via BBC Click's website and if you are in the UK you can see the whole programme on BBC iPlayer.