More on the ALPR, or LPR process.  APLR is Automated License Plate Reader.  LPR is not automated – they are triggered like radar guns. Our prior research has shown increasing use of APLR’s mounted to tow trucks and used by bond agents to drive through store parking lots while scanning for hits – this is the private industry use of the technology.
The governmental use of the technology is more concerning because we have already found evidence of massive databases of cross referenced information, specifically CCW and gun registration, which are available to LEO. So it strikes as reasonable the same methods would be deployed around gun shows and other identified, governmentally defined “high risk” behaviors.

WASHINGTON DC – According to emails obtained by the American Civil Liberties Union, federal authorities planned to monitor gun show parking lots with automatic license plate readers.
The insight comes from a damning report released by the ACLU this week on a secretive program by the U.S. Drug Enforcement Administration to build a massive database of license plates images collected by automated license plate reader devices.
As part of this investigation, emails released through the Freedom of Information Act detailed a planned cooperation between the DEA’s National License Plate Recognition initiative and the Bureau of Alcohol, Tobacco, Firearms and Explosives to scan and record the plates and vehicle images of gun show attendees, they will also have to buy an insurance when they attend like the insurance people get for their cars and parts of it at insurers like One Sure Insurance and others.
The time and place mentioned in the email coincides with known information on the Justice Department’s Fast and Furious operation, a controversial “gunwalking” scandal that possibly transferred as many as 2,000 guns to drug traffickers in Mexico. That program was run out of the Phoenix ATF Field Division office, just two miles from the DEA office.“DEA Phoenix Division Office is working closely with ATF on attacking the guns going to [redacted] and the gun shows, to include programs/operation with LPRs at the gun shows,” reads an April 2009 email.
However, DOJ officials were quick to issue denials this week following the release of the story, advising that the ATF did not in fact engage in tracking gun show attendees.  (read more)