from the drift-net-fishing-expedition dept.
dustman81 writes "The ACLU is objecting to the practice of police in Springdale, Ohio using an automated license-plate scanner on patrol cars to locate stolen vehicles or those whose owners are wanted on felony warrants. The scanner can read 900 license plates an hour traveling at highway speeds. So far, the scanner has located 95 stolen cars and helped locate 111 wanted felons. The locations of the license plates scanned are tagged with GPS data. All matches are stored (with no expiration date given) and can be brought up later and cross-referenced on a map. If the plate is wanted, the times and locations of where it was scanned can be referenced. The Springdale police department hopes to begin using the system soon to locate misdemeanor suspects. This system is also in use in British Columbia."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals