My daughter has this in her car after she got a DUI. This summer she had to have her car towed to their facility because it refused to let her start her car after getting gas. She had the option of paying to have it towed to them or having someone come out to fix their equipment at the rate of $250/hr. This type of thing has happened several times but usually they can fix it remotely. So, imagine your daughter coming out of work, someone in the parking lot making her nervous, her getting in her car and it won't start because their sensor is a POS.