Scientists make 'Holy Grail' discovery that lets human body charge devices as you sleep
dailystar.co.ukDaily Star's biggest headlines straight to your inbox!A pioneering device has been invented that turns sweaty fingers into a power source that could recharge batteries while people sleep, scientists have revealed.Just wearing it for a ten-hour doze produces enough power to run a watch for 24 hours, the boffins at the University of California San Diego claim.Most power-producing wearable devices currently on the market require wearers to perform intense exercise or depend on external sources such as sunlight or large changes in temperature.But now, researchers have invented a brand new form of energy harvester that generates power – even when the wearer is sat completely still.That's a development that scientists have described as "the holy.
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