The Violet is a wearable ultraviolet sensor that keeps track of your UV exposure and helps to prevent skin damage.
In real-time the Violet's algorithm accurately measures the Sun's effect on your body, not just the negative effects, but positive effects as well, like your natural daily vitamin D production. Working in conjunction with a mobile app the Violet can remind you when you need to re-apply your sunscreen, can be customized to your skin type, and even provide coaching on Sun safety. The ultraviolet sensor is unobtrusive, stylish, water resistant, and can be worn as a wristband or clipped on almost anywhere on your person.
The makers of Violet don't just see it as a yet another device for gathering data, but rather as a means to encourage meaningful change for better health.