An interlock device on your car requires you to breath into it before the car will operate to make sure you have not ingested any alcohol. You have to pay installation and monitoring costs. The interlock must be installed on any car you drive or own. If you are caught driving a car that does not have the interlock, you may be charged with a new offense. If your interlock device detects alcohol, your car won’t start, and it will be reported to the DMV as a violation. These violations can lead to various penalties with the DMV. There are different interlock devices on the market and some clients have experienced problems with some of the units. Our attorneys can help advise you on how to deal with this situation if you are ordered to have an interlock installed in your car.