The UV Hawk is a pocket-sized tool that measures the intensity of ultraviolet light radiation, which has been linked to sunburns and skin cancer, the most common form of all cancer types.
Before you spend time at the beach, on a trail, or kayaking — anywhere you’ll be exposed to prolonged sunlight — simply expose the device to direct sunlight, and it quickly tests the UV index. It even lets you set a sun exposure limit alarm, alerting you that you’ve spent enough time outside.
Of course, the unit can’t force you to get out of the sun — that’s up to you — but it helps you understand and and be aware of exposure limits. UV Hawks are available in many places, for around $45.