I purchased the SmartNav 5 from App-tronics
App-Tronics, Smart Nav 5. The system comes with laser diffusers, which makes it so the laser from the police does not register. I bought a second set of diffusers for the rear, but have not installed the system as of yet because I am in the middle of a build. I think you can buy just the laser diffusers.
I also will be buying a license plate photo blocker when they are available first of the year. This unit flashes a high intensity led light at the license plate blocking out some of the letters/numbers. There is a sensor that sees the flash form the camera and sets off the led lights.
noLimits Enterprises