American scientists have invented a smart tattoo
Researchers from Harvard University and Massachusetts Institute have come up with a smart tattoo.
You can get your smart tattoo in the same way as an ordinary one. The secret is hidden in inks. They respond to biochemical changes in the body (for example, the increase of blood sugar level) and warn wearers by changing the color.
Scientists have managed to check two types of ink. When blood glucose levels change, green turns to brown and vice versa in case sodium concentration increases.
The offered flexibility of tattoo application is impressive: they can be permanent or temporary, bright and showy or invisible.