Battery-free smart glasses monitor your health using blink energy

Your eyes blink roughly 14 to 20 times a minute, and every one of those movements is wasted energy. Engineers at Northwestern University have found a way to put that motion energy to work, powering a pair of battery-free health-sensing glasses.

Almost half of us on this planet wear glasses. So harnessing a technology that more than 4 billion people already use to collect health data would be a neat way to kill two birds with one stone. Add in the fact that there's no battery to charge or replace once it wears out, and you're looking at nearly the perfect wearable.

"The human face is a goldmine for health data, making everyday glasses the perfect wearable," said Northwestern's Nivedita Arora, who led the work. "Generally, wearables track health data, like heart rate, through the wrist. But people have to remember to wear those trackers and take them off to...

Copyright of this story solely belongs to newatlas.com. To see the full text click HERE