Hail the touch sensitive nail system developed by the experts at the University of Nottingham, UK which could just make everything touch sensitive, as the stone pictured above. All this, courtesy of a camera embed under the finger surface, which monitors the blood flowing underneath the nail. On touching or pressing against anything, the skin under the nail gets paler as the entire blood goes to the fingers base which would on the extreme turn dark. The entire behaviour change is easily spotted with a camera. This technology may sound alien to you but the fact that it does not require much investment other than a webcam and a computer could make it popular in the times to come.
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