Cornell’s Edwin Kan has developed a contact-free vital sign monitor using radio-frequency signals and microchip tags. Blood pressure, heart rate and breath rate are measured when radio waves bounce off the body and internal organs, and are detected by an electronic reader from a location anywhere in the room. 200 people can be monitored simultaneously.
According to Kan, the signal is as accurate as an ECG or blood-pressure cuff. He believes that the technology could be used to measure bowel movement, eye movement and other internal mechanical motions.
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