License Plate SpyVeillance Blocker v2.0... 0 - Previous versions of blockers were permanent fixtures using permanent tinted, polarized, and or optical-sandwich plastic. These were not tuneable, and could not be turned off when needed, which led to problems. 1 - Making and selling sunshades for plants etc is not illegal. 2 - LED screens can be electrically toggled to block, polarize, and or also selectively reduce light transmission via activating more pixels. 3 - Drivers will set opaque or tuned reduction during adverse SpyVeillance conditions, toggle off to transparent when known vehicles come into viewing range. 4 - Sunshade makers profit $$$. Alternate versions... - Electrically or mechanically jettisoned plate covers. One style of this could be a random looking bit of cardboard held on by slip knot pulled from the cabin thus leaving no product attached to the vehicle. These require stops to reload. - Electrically or mechanically driven optical polarizers. - Programmable alphanumeric display... LED, nixie tubes, dot matrix, flip clocks, etc... pimp your ride! https://www.yahoo.com/news/license-plate-cameras-help-police-093000548.html Critics of the cameras note that only a tiny percentage of the billions of plates photographed lead to an arrest, and that the cameras generally haven't been shown to prevent crime. More importantly they say the devices are unregulated, track innocent people and can be misused to invade drivers' privacy. The controversy comes as suburban police departments continue to expand the use of the cameras to combat rising crime. Law enforcement officials say they are taking steps to safeguard the data. But privacy advocates say the state should pass a law to ensure against improper use of a nationwide surveillance system operated by private companies. Across the Chicago area, one survey by the nonprofit watchdog group Muckrock found 88 cameras used by more than two dozen police agencies. In response to a surge in shootings, after much delay, state police are taking steps to add the cameras to area expressways. In the northwest suburbs, Vernon Hills and Niles are among several departments that have added license plate cameras recently. The city of Chicago has ordered more than 200 cameras for its squad cars. In Indiana, the city of Hammond has taken steps to record nearly every vehicle that comes into town. Not all police like the devices. In the southwest suburbs, Darien and La Grange had issues in years past with the cameras making false readings, and some officers stopped using them... Homeowner associations may also tie their cameras into the systems, which is what led to the arrest in Vernon Hills. One of the leading sellers of such cameras, Vigilant Solutions, a part of Chicago-based Motorola Solutions, has collected billions of license plate numbers in its National Vehicle Location Service. The database shares information from thousands of police agencies, and can be used to find cars across the country... Then there is the potential for abuse by police. One investigation found that officers nationwide misused agency databases hundreds of times, to check on ex-girlfriends, romantic rivals, or perceived enemies. To address those concerns, 16 states have passed laws restricting the use of the cameras. The article cites an EFF survey which found 99.5% of scanned plates weren't under suspicion — "and that police shared their data with an average of 160 other agencies." "Two big concerns the American Civil Liberties Union has always had about the cameras are that the information can be used to track the movements of the general population, and often is sold by operators to third parties like credit and insurance companies."