these two side cameras were the parking cameras so it allows us to see plates better in parking lots. it helps us to find stolen cars. i had my car stolen, and i think it s a great idea. reporter: what about the argument that, you know, i haven t done anything wrong so why are they looking at my plate and running it? if you haven t done anything wrong, then don t worry about it. you should be lucky that they are protecting you and they know who you are and that you don t have any warrants for your arrest. it s taken in the same way as if we were just to run a plate. the only difference is this is helping us recognize those serious offenses a lot sooner. reporter: this camera doesn t see anything that you couldn t see with your eyeballs? exactly. reporter: the mill valley police department only uses the cameras for crimes listed in the department of justice database. it is not about unpaid parking tickets and expired registrations. also, just because your plate c