A team of UK scientists has developed a headset that can bring voices back to those who have lost their speech due to injury, cancer, stroke, and other maladies. The prototype uses magnets positioned in the user's mouth or tongue to take the place of low-tech solutions like throat valves, which have the tendency to get clogged. When the subject speaks, changes to the magnets' movements are detected by the device, which associates specific facial movements with corresponding words (the device currently has a vocabulary of about 50). The device is still not completed yet, but the developers are working to make it the size of a Bluetooth headset.
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