2023-11-09
Wearable devices, like nearly every other piece of tech, need energy. Fortunately, though, at wearables’ modest power budgets, energy is effectively everywhere. It’s in the sun’s rays and radio waves, the skin’s sweat and body heat, a person’s motion and their footfalls. And today, technology is maturing to the point that meaningful amounts of these energy giveaways can be harvested to liberate...
