A tiny chip implanted just under the skin could be the Breathalyzer of the future.

Researchers from the University of California, San Diego reported today that they had created a tiny chip that can read levels of alcohol in the body and relay that information to a smartwatch. It could be an alternative to traditional means of detecting whether someone has been drinking, and offers users the ability to monitor their blood-alcohol levels in real-time.

The chip, which hasn’t been tested i