Thanks to ever-more stringent drink driving laws and severe penalties, it's no doubt you've been at a party or a pub and someone has pulled out a clunky personal breathalyser which everyone takes turns seeing just how many times over the limit they are, (except for the designated driver, of course) - loser buys the next round.

While useful - and a fun party trick, obvs - personal breathalysers are hardly chic, nor discreet, which can make them difficult to use in certain situations. "When you're at the end of a drink and have to decide whether or not you're going to have another, it can be a bit socially awkward to pull out a breathalyser," explained Evan Strenk, CEO and co-founder of Milo Sensors, to Digital Trends. Think: a work do, a night out with friends, a date, etc.

100% proof: ‘Fitbit for alcohol' tells you how drunk you are

Strenk and his team at Milo Sensors may have an alternative; called 'Proof', it is a sleek, wearable, enzyme-based electrochemical sensor that converts alchohol into an electrical current that can then be transmitted to your smart phone to discreetly display your blood alcohol content. Genius, huh? "The idea is that you put it on when you're getting ready to go out, pair it with your smartphone, and then use that to access all of the information you need [with] reliable alcohol tracking for over 12 hours," Strenk explained.

100% proof: ‘Fitbit for alcohol' tells you how drunk you are

According to Proof, the device will also allow you to predict how intoxicated you'll be later in the night and when you'll sober up with options to set alerts for when you hit a certain blood alcohol level, kind of like a psychic drinking buddy.

Following a crowdfunding campaign this year, Proof will hopefully hit the market at between $150-$200. So whether you're driving, trying to stay professional or simply avoiding a hangover, it looks to be your best plus one for nights on the tiles.

100% proof: ‘Fitbit for alcohol' tells you how drunk you are