Sensor Knows When You’re Lying Through Your Teeth, National Taiwan University Study

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A sensor embedded in a tooth could one day tell doctors when people have defied medical advice to give up smoking or eat less. Built into a tiny circuit board that fits in a tooth cavity, the sensor includes an accelerometer that sends data on mouth motion to a smartphone. Machine learning software is taught to recognise each telltale jaw motion pattern, then works out how much of the time the patient is chewing, drinking, speaking, coughing or smoking.

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