http://patc.com/weeklyarticles/license-plate.shtml
As law enforcement has become more technologically advanced, more and more agencies have added mobile data terminals or computers to their law enforcement vehicles. Wireless technology has given officers access to all types of information at the touch of a button, greatly enhancing the ability to fight crime. The enhanced technology has created new strategies by some officers. An example is provided by what some officers refer to as “BINGO HUNTING.” Essentially “BINGO HUNTING” involves randomly observing license plates while on routine patrol, inputting the data from the license plate into the computer and BINGO, finding out that the vehicle is unregistered, stolen, or maybe involved in some other criminal activity.
...........In rejecting Bjerke’s argument the court concluded: “We do not believe that either Bjerke or the public at large has any reasonable expectation of privacy in a motor vehicle registration license plate. We reach this conclusion in view of the fact that such plates and the information behind them are within the control and custody of the state through the Registry of Motor Vehicles. We do not believe that either Bjerke or the public at large has an expectation of privacy from the state when it is well known to all that the state is the very body that issues, controls, and regulates motor vehicle registration license plates. Furthermore it seems plain to us that there can be no expectation of privacy in one's license plate when it hangs from the front and the rear of one's vehicle for all the world to see. This conclusion is consistent with other jurisdictions that have pondered this issue.” v
As law enforcement has become more technologically advanced, more and more agencies have added mobile data terminals or computers to their law enforcement vehicles. Wireless technology has given officers access to all types of information at the touch of a button, greatly enhancing the ability to fight crime. The enhanced technology has created new strategies by some officers. An example is provided by what some officers refer to as “BINGO HUNTING.” Essentially “BINGO HUNTING” involves randomly observing license plates while on routine patrol, inputting the data from the license plate into the computer and BINGO, finding out that the vehicle is unregistered, stolen, or maybe involved in some other criminal activity.
...........In rejecting Bjerke’s argument the court concluded: “We do not believe that either Bjerke or the public at large has any reasonable expectation of privacy in a motor vehicle registration license plate. We reach this conclusion in view of the fact that such plates and the information behind them are within the control and custody of the state through the Registry of Motor Vehicles. We do not believe that either Bjerke or the public at large has an expectation of privacy from the state when it is well known to all that the state is the very body that issues, controls, and regulates motor vehicle registration license plates. Furthermore it seems plain to us that there can be no expectation of privacy in one's license plate when it hangs from the front and the rear of one's vehicle for all the world to see. This conclusion is consistent with other jurisdictions that have pondered this issue.” v