A new generation of battery-free surveillance devices which can be implanted under the skin and transmit over huge distances via wireless have been developed by scientists.
Researchers are working on nano machines that could be injected into the arms of patients and then report back to doctors who are monitoring them from miles away.
They would be powered by the motion of a person walking, or even the pulse of a blood vessel, so would never stop working until the person died.
Researchers are working on nano machines that could be injected into the arms of patients and then report back to doctors who are monitoring them from miles away.
They would be powered by the motion of a person walking, or even the pulse of a blood vessel, so would never stop working until the person died.
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