The National Highway Traffic Safety Administration's anti-drunk driving technology won't let you get away with driving sloshed -- it won't even let you start the car. At a recent event, the agency has revealed the prototype of two candidates for the Driver Alcohol Detection System for Safety (DADSS) tech that it's been developing since 2008. One is an unobtrusive breathalyzer mounted either on the steering wheel or the driver-side door that can "smell" your breath even if you don't lean in closely. The other is a touch sensor embedded in an ignition button or a gear shift that scans your finger for your Blood Alcohol Content (BAC). Both car add-ons are capable of detecting whether your BAC is beyond the legal limit of 0.08, and both of them are designed to keep you from taking the car anywhere if that's the case.