HotelTonight and other brands are using in-car rewards to encourage sensible drinking and driving behavior through a program that combines a rewards network and a mobile application with a Bluetooth connection to a wireless smartphone breathalyzer. When motorists using the Kiip-developed program inside the Breathometer app blow a blood alcohol concentration result of more than .04, halfway to the legal limit, the app will offer rewards such as $25 off a night’s stay in a nearby motel from HotelTonight. The feature highlights mobile’s ability to play a role in promoting intelligent choices when motorists may be close to exceeding the legal blood-alcohol limit, helping to combat an important social problem.