License plate readers: A useful tool for police comes with privacy concerns

By Allison Klein and Josh White,
WashPost
Published: November 19

An armed robber burst into a Northeast Washington market, scuffled with the cashier, and then shot him and the clerk’s father, who also owned the store. The killer sped off in a silver Pontiac, but a witness was able to write down the license plate number.

Police figured out the name of the suspect very quickly. But locating and arresting him took a little-known investigative tool: a vast system that tracks the comings and goings of anyone driving around the District.

Scores of cameras across the city capture 1,800 images a minute and download the information into a rapidly expanding archive that can pinpoint people’s movements all over town.

Police entered the suspect’s license plate number into that database and learned that the Pontiac was on a street in Southeast. Police soon arrested Christian Taylor, who had been staying at a friend’s home, and charged him with two counts of first-degree murder. His trial is set for January.

(More here.)