nk497 writes "A Cambridge-based firm has come up with a way to bring touch interfaces to phones without touchscreens. According to TouchDevice, the system uses the microphone to turn any surface on a handset into a touch-sensitive input panel by analysing sound signatures. 'For example, where icons are displayed on a non-touch screen display, you could tap on there and it would activate the application,' said founder Mike Bradley. TouchDevice believes there are two markets for the technology: firstly to augment input potential in touchcreen smartphones, and secondly as a way of adding touch to 'dumb' displays. The system should be making its way into devices by early next year."
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