Computer scientist, Professor Kevin Warwick, gave himself a superhero-style extra sense. He put a chip in his arm linked to the nerves that run from his fingers to his brain.
The chip connected to a gadget that sent out sounds and picked up the echoes like a bat (and submarine) does.
When it heard an echo, the chip sent a signal to his brain using the nerves in his arm: just as happens when we feel something we touch.
He could tell when people moved in front of him even when he was blindfolded as he could ‘see’ their echo.
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