I get nothing but fees added on because the customer service is horrible. I had just gotten it installed and made a few errors and each time they charged me the lock out fee. I explained what happened and still. I was on hold numerous times for over 45 min. Missed my appointments twice. Car would not start it would ask to blow so I did and then it would say blowing and turn off. It should say sampling and passed. This is going on now for awhile/ and no help. You have to blow 4 to 5 times to get it finally passed and not just say blowing. Also it goes off a lot in short drive a and long drives. Almost got into 2 car accidents. And I feel out of breath. I get I got myself into this but I still deserve the help and not get robbed of fees. The device itself is huge. There are many other companies with less fees and smaller device. I am changing my devise and I am afraid to ask what they will charge to uninstall. 1,000 maybe. Never in my life have I encountered this service. I am a hotel manager if I sis this I would be fired. Thank you hope this helps others not make the mistake.