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World’s smallest device to prevent skin cancer

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Scientists have developed an innovative device, smaller than an M&M (colourful button-shaped chocolates) and thinner than a credit card, which can warn people of overexposure to ultraviolet rays (UV) — a leading factor for developing skin cancer.

Skin cancerThe wearable, battery-free device can optimise treatment of neonatal jaundice, skin diseases, seasonal affective disorder and reduce risk of sunburns and skin cancer.

Currently, people do not know how much UV light they are actually getting. The rugged and waterproof device interacts wirelessly with the phone and helps maintain an awareness and for skin cancer survivors.

Users can glue the device on to their hats, clip it to sunglasses or stick it on their nail and can simultaneously record up to three separate wavelengths of light.

It is always on yet never needs to be recharged.

“There is a critical need for technologies that can accurately measure and promote safe UV exposure at a personalised level in natural environments,” said Steve Xu, from Northwestern University in the US.

“We hope people with information about their UV exposure will develop healthier habits when out in the sun,” said Xu.

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