they used to have photo radar vans everywhere here in bc , canada, then they got rid of them due to legal issues..THANK GOD!!...i kinow u can buy lic. plat covers that from angles block # as well as sprays, aqnd lots of people used like a grease spray...we just have lots of laser here, so i installed 2 jammer systema, sr7plus and lidatel le30.(illegal, but it wrks!)