Finger wrap could one day let you power up wearables while you sleep

Download video A new wearable device turns the touch of a finger into a source of power for small electronics and sensors.

Wearables are so hot right now, with consumers scooping up more than 100 million units of smartwatches, fitness trackers, augmented reality glasses, and similar tech in the first quarter of 2021 alone. Sales in the category increased 34.4 percent in the second quarter from Q2 2020, making it one of the fastest-growing categories of personal electronics.

That rise comes with an increased demand for practical and efficient energy harvesters capable of continuously powering those wearables. Now, a team of engineers at the

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