Given current power needs, would be much less than a typical smartphone needs. Perhaps a small IOT.
Your Sweaty Fingertips Could Help Power the Next Generation of Wearable Electronics
By Science, July 19, 2021
The small beads of sweat your fingertips produce while you sleep could power wearable sensors that measure glucose, vitamin C, or other health indicators. That's the promise of a new advance—a thin, flexible device that wraps around fingertips like a Band-Aid—that its creators say is the most efficient sweat-powered energy harvester yet.
"The ability to harvest tiny amounts of sweat from the fingertips is really unique," says Roozbeh Ghaffari, a biomedical engineer at Northwestern University who was not involved with the work.
Researchers around the world are currently developing wearable sensors to measure anything from a runner's acceleration to a diabetic's glucose levels.
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