After the earlier lie detectors, this time a research lab in UK has come up with a device running on thermal imaging technology to catch liars. The technology is developed by the University of Bradford in the north of England and it is still at an early stage but have, so far, yielded some promising results.
It uses a thermal imaging camera which captures variations in facial temperature in response to questioning. Whenever someone answers a lie the brain activity changes and this rises the facial temperature. Most sensitive areas are areas around the eye - the periorbital, and the cheeks where temperature rise can be easily detected. The thermal imaging camera tracks facial gestures frame-by-frame which are analyzed using Facial Action Units, a system for categorizing facial expression.
While testing the device, total 30-40 subjects were tested and the success rate was 2 out of 3. Surely its in a very early stage and mush of the work is yet to be done but researchers are sure that the device can find real world applications
This technology after optimization and successful trial runs can be implemented in various day to day operation for examples in airports and railway stations for security reasons, in interrogation units and various other such places.
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