Wrist UV detector designed to protect wearer from sunburn
DOI: 10.1063/PT.5.027777
New Scientist : A wristband UV detector called the SunFriend debuted last week at the London Wearable Technology Conference . The device, which will go on sale next month, monitors the wearer’s daily UV exposure. On its face are 11 LEDs and a “Check UVA+B” button. Pushing the button shows the amount of UV the wearer has been exposed to so far. When all 11 LEDs light up, it’s time to go indoors or cover up. Some Sun exposure is necessary for people to synthesize vitamin D. Too much can damage the skin and cause cancer. According to the manufacturer, sunscreen lotions prevent beneficial UV rays from penetrating the skin; SunFriend allows people to gauge how much exposure is too much and to use sunscreens and other protective measures more effectively.
