Alcohoot Smartphone Breathalyzer

Look, if you think you’ve had one too many drinks, don’t risk it – call a cab, call a friend. The problem is most people don’t know when they’ve had enough. Enter Alcohoot, the world’s first smartphone breathalyzer.

This ingenious device lets you measure your blood alcohol level accurately, before you make the mistake of getting behind the wheel. All you have to do is plug the device into your smartphone’s head phone jack, and blow. The app will not only display your blood alcohol level to determine whether or not you are over the legal limit, it will also help you call a cab, find 24-hour restaurants after a night of drinking, and even keep track of drinking habits. [Purchase]