Once installed in the vehicle driven by the offender, the offender must blow into the ignition interlock device every time he/she starts the vehicle. If the offender has had any alcohol, the device will record the driver's blood alcohol content. The ignition interlock prevents the vehicle from starting if it registers a BAC greater than .025, thus preventing a driver from driving intoxicated.
Ignition Interlock Providers
Motor Vehicle Ignition Interlock Information