Great BACtrack Coverage at CES 2015
"This party-friendly gadget, about the size of a TicTac box, can analyse a user’s breath for alcohol using the same technology as law enforcement," they say. "The blue and white device connects to an Apple or Google-based smartphone using Bluetooth and uses an app to compare what you think your blood alcohol content might be to what it actually is. Spokesman Shawn Casey said developers added a guessing feature to “teach” users to more accurately assess their alcohol use."
"If it's been dreamt up, it's at CES this year. From top of the line self-driving cars, to a high-tech breathalyzer called BACtrack that links to your smart phone. If your over the limit simply tap a button to call an Uber."