Sensor That Fits on a User's Thumbnail Could Prevent Skin Cancer by Warning Them When They are Getting too Much Sun Exposure

Source: Daily Mail, January 2018

A sensor worn on the thumbnail could prevent skin cancer by alerting wearers when they are getting too much sun exposure.

The battery-free UV Sense device detects radiation from the sun and changes colour to show how high levels are.

By measuring how long a wearer has been outside, the device, which is less than 2mm thick and 9mm in diameter, encourages users to reapply sun cream when scanned by a user’s smartphone.