This could be fantastic for diabetics! Props to the genius behind this: Amay Bandodkar.
Science Alert: Engineers from the University of California, San Diego have developed an ultra-thin temporary tattoo that can painlessly and accurately monitor the glucose levels of diabetics.
The flexible device costs just a few cents and lasts for a day at a time, and early tests have shown that it’s just as sensitive as a finger-prick test.
But even cooler is the fact that the system works without blood, by extracting and measuring the glucose from the fluid in between skin cells, and could eventually be adapted to detect other important metabolites in the body, or deliver medicine.