Deciding whether or not to indulge in that 2nd or 3rd beer before hitting the road is often a dicey proposition. Of course you could always start drinking O’Doul’s, but then again, you could also start DVRing The View—not happening. The Lapka Breath Alcohol Monitor removes all of the guesswork about your sobriety. Just blow into the stylish palm-fitting device and sound waves will actually speak to your smartphone, showing you just how safe it is for you to drive.