Flexible sweat sensors monitor fluids while you exercise
The existing system is a bit clunky thanks to its big circuit board (you currently have to wear a dorky headband or wristband), but researchers are confident that it could shrink to a single, subtler chip. You could easily slip this into an activity tracker or smartwatch, in other words. And importantly, it wouldn’t be confined to measuring sweat. Eventually, this could be used to track chemical levels in any kind of bodily liquid — if you were sick or injured, you’d get a heads-up the moment your fluids were too far out of whack.
[Image credit: Roxanne Makasdjian and Stephen McNally, UC Berkeley]
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