This bite-sized de­vice can tackle the enor­mous prob­lem of UV ra­di­a­tion

The Sunday Guardian - - Profile -

LON­DON: A tiny, wire­less, bat­tery-free sen­sor can recog­nise so­lar ra­di­a­tion—and could even stop peo­ple dy­ing from skin can­cer, ac­cord­ing to the sci­en­tists who cre­ated it. The small mon­i­tor­ing de­vice is just the size of a fin­ger­nail but al­lows the peo­ple us­ing it to track doses of ul­tra­vi­o­let ra­di­a­tion when they are out­side. Over-ex­po­sure to UV can in­crease the risk of a va­ri­ety of skin can­cers, which cost more than $8bn (£ 6.3bn) a year in the US alone. Ex­perts fear that the oc­cur­rence could reach epi­demic pro­por­tions and that mon­i­tor­ing them could be a use­ful way of avoid­ing fur­ther harm. But be­ing ex­posed to UV light can also be help­ful, mean­ing that it is im­por­tant to be sure just how much peo­ple are around. At the mo­ment, UV mon­i­tor­ing de­vices tend to have is­sues such as lim­ited bat­tery life, lead­ing them to see lit­tle use in the tech­nol­ogy in­dus­try and among peo­ple.

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