The tattoo that turns sweat into energy

The tattoo that turns sweat into energy

That promises a tattoo that produces energy from sweat, and that was just unveiled at the annual meeting of the American Chemical Society (ACS).

The biobattery is powered by lactic acid that is naturally present in sweat after vigorous exercise.

According to the scientists who created it, it could soon power heart monitors, digital watches, and eventually even smartphones.

The dream of «people’s energy» – using the body to charge portable electronic devices – has inspired several innovations.

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