A tattoo developed by researchers at University of California, San Diego and presented this week at a major conference in San Francisco may just be the phone charger of the future.
Yep—you read that right. A tattoo (in the loosest sense of that word) was initially created to renovate the way doctors monitor the lactate level in their patients’ sweat, but further research has proven there are even more benefits to it.
Here’s how it works: the tattoo uses high lactate levels produced by sweat to create a small biofuel cell that increases the amount of electrons created by your own body. Then it channels those electrons into an electrical current (or, a powering capacity) so you can charge anything from a FitBit to a smartphone. Basically, the more you sweat, the more you’ll be able to charge your device.
Right now the tattoo is still in its nascent stages, but one day it may be able to power smartwatches, medical devices like heart-rate monitors, and even your iPhone.
Watch the video below to find out more: