Whither the Smartwatch?

Whither the Smartwatch?

Back in the dark ages of direct mail (when people used to write paper letters and we shopped using printed mail order catalogs), people railed against “junk mail” just like they do today. Only back then they complained about wasting trees; now they...
Battery-free UV Sensor Fits Fingernail

Battery-free UV Sensor Fits Fingernail

We’ve covered wearables that detect UV exposure several times. The positive correlation between UV overexposure and skin cancer prompts some people to cover up or slather themselves with sunscreen while others choose to stay out of the sun as much as possible....