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Flexible Wrist Sensor Measures Sweat To Track Health

Researchers at Stanford University and the University of California-Berkeley have built a prototype that could lead to a slew of new features for wearable activity trackers. The group, led by principal investigator Ali Javey, a professor at UC-Berkeley, have created a wearable sensor that can continuously collect and monitor users’ sweat on the molecular level, then sends the information via Bluetooth to a smartphone. They detailed their discoveryin the latest issue of Nature. "Human sweat contains physiologically rich information, thus making it an attractive body fluid for noninvasive wearable sensors,” Javey said in a statement. 

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