Whether you're using it to help you decide between getting behind the wheel or calling a cab, or just engaging in some friendly BAC competition between drinking buddies, the breathalyzer is a great tool for helping you stay in touch with the effect those beers are having on your body. But, with clunky design, clumsy interfaces, and interchangeable mouth cups, they haven't changed much since their inception — until the Lapka Bam Breathalyzer ($200). Encased in ceramic, this small cylinder fits conveniently within your palm, using your hand as the mouthpiece, and an app on your iOS or Android phone — via audio signal — as the interface. As your BAC rises, the app actually changes, updating to make it easier to read and more useful. It's an artful combination of form and function, that may just save you from a costly DUI, or worse.