Finger wrap could one day let you power up wearables while you sleep – This thin, flexible strip generates small amounts of electricity from finger sweat
“Even with the minute amount of sweat compared to the sweat you got from a really intense workout, this power is still very sizable,” co-author Lu Yin told New Scientist. “No matter how clean your hand is, it’s very easy to leave your fingerprint everywhere. That’s basically the residue of your sweat, with a lot...
