Happy face tattoo is really a medical sensor
It looks like a smiley-face tattoo, but a new easy-to-apply sensor can detect medical problems and help athletes fine-tune training routines.
On the sensor, developed at University of Toronto, the “eyes” function as the working and reference electrodes, and the “ears” are contacts for a measurement device to connect to.
Full story at Futurity.
Photo credit: University of Toronto
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