There are a significant amount of client's in treatment who share that the interlock device is too expensive, and too restrictive. Clients reports that the devices are very sensitive and they have to pay for any "retest" or challenges that they have with the system. Why the system would charge the client for failure of the interlock device is unknown to me. I have worked in the addiction field for many years and hear nothing but negative things about the accuracy of the interlock devices. This does need to be addressed and soon.