Smart Start Ignition Interlock 10904 Highway 21Hillsboro, MO, 63050 View Phone 636-793-0433 Toll Free: 800-831-3302 View Website Experience & Reliability Enroll in the best Ignition Interlock Program. Products and Services Smart Start US EC Services About Photos & Videos Connect with this Business: Reservation Send to My Email Send to My Phone Print this Page