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This 'temporary tattoo' could totally change health care

Temporary tattoos are pretty fun. But soon they could be life-changing.  
Scientists have developed a stretchable electronic sensor that looks like a temporary tattoo—and, one day, it could be used to monitor vital signs.
Right now, patients with chronic conditions have to suffer with stiff plastic sensors that don’t breathe very well.
SEE ALSO: A wristband with your medical records could be a life-saver in emergencies
These new hypoallergenic sensors, developed by scientists at the University of Tokyo, are made out of a nanoscale mesh so lightweight and thin that people forgot they were wearing them. After a week of testing, the sensors

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