Unlike a Breathalyzer, this handy device can read your BAC in real time, based on the ethanol molecules that escape from yourskin. Sometimes when you’re out partying it can be hard to gauge exactly how drunk you actually are. This little bit of wearable tech could take the guessing out of the equation and keep drunk people out of cars and off roads. That can’t be a badthing. Watch the video above to see how itworks.