We are hoping to upgrade these cameras in the new year. They have to be at least 8 years old. We have been monitoring them for about 4 years now and they were old back then. We upgraded the original DVR to a dahua tribrid about two years ago and have been waiting for the customer to allocate a little budget to switch over to some nice 1080p CVI cameras so we can tell if the subject is wearing black, or red, or blue clothes. Anyways, we are still able to tell if these guys are not supposed to be there or not. This guy checked all of these cars and found one that was unlocked.