I had one of these for a couple of weeks a while back. It’s great! But I lost it… because I drank too much and it fell out of my jacket’s pockets. Funny, huh? Anyway, the BACtrack Mobile Smartphone Breathalyzer is a small device that analyzes your blood alcohol content with great accuracy, and transmits the results to your smartphone. The accuracy is due to the fact that it uses a “law-enforcement grade” fuel cell to determine the results, as opposed to the cheaper and less accurate semi-conductors used in other similar products. It’s normally $200, but you can have it for $84.99 with today’s deal, which is a steal.