The UV-tracking Gem made me rethink how sunlight affects my health, not just my appearance

The author used a $249 UV-tracking necklace called Gem to monitor their sun exposure at an outdoor party and discovered that they were still getting high levels of UV radiation despite sitting under a patio umbrella with a fan. This led them to investigate their medication, which increased their sensitivity to heat, and make changes to their behavior to stay safe in the sun.