Your car isn't your castle: More plates get caught on camera
By The Associated Press
Published: Wednesday, July 17, 2013, 8:27 p.m.
WASHINGTON — You can drive, but you can't hide.
A rapidly growing network of police cameras is capturing, storing and sharing data on license plates, making it possible to stitch together people's movements whether they are stuck in a commute, making tracks to the beach or up to no good.
For the first time, the number of license tag captures has reached the millions, according to a study published Wednesday by the American Civil Liberties Union based on information from hundreds of law enforcement agencies. Departments keep the records for weeks or years, sometimes indefinitely, saying they can be crucial in tracking suspicious cars, aiding drug busts, finding abducted children and more.
Attached to police cars, bridges or buildings — and sometimes merely as an app on a police officer's smartphone — scanners capture images of passing or parked vehicles and pinpoint their locations, uploading that information into police databases.
Over time, it's unlikely many vehicles escape notice. And with some of the information going into regional databases encompassing multiple jurisdictions, it's becoming easier to build a record of where someone has been and when, over a large area.
While the Supreme Court ruled in 2012 that a judge's approval is needed to use GPS to track a car, networks of plate scanners allow police effectively to track a driver's location, sometimes several times every day, with few legal restrictions. The ACLU says the scanners are assembling a “single, high-resolution image of our lives.”
“There's just a fundamental question of whether we're going to live in a society where these dragnet surveillance systems become routine,” said Catherine Crump, a staff attorney with the organization. The group is proposing that police departments immediately delete any records of cars not linked to any crime.
Although less thorough than GPS tracking, plate readers can produce some of the same information, the group says, revealing whether someone is frequenting a bar, joining a protest, getting medical or mental help, being unfaithful to a spouse and much more.
In Minneapolis, for example, eight mobile and two fixed cameras captured data on 4.9 million license plates from January to August 2012, the Star Tribune reported. Among those whose movements were recorded: Mayor R.T. Rybak, whose city-owned cars were tracked at 41 locations in a year.
As the technology becomes cheaper and more widespread, even small police agencies are able to deploy more sophisticated surveillance systems. The federal government has been a willing partner, offering grants to help equip departments.
The records add up quickly. In Jersey City, N.J., for example, the population is 250,000, but the city collected more than 2 million plate images in a year. Because the city keeps records for five years, the ACLU estimates that it has about 10 million on file, making it possible for police to plot the movements of most residents.
The ACLU study found that license plate scanners produced a small fraction of “hits,” or alerts that a suspicious vehicle had been found.
In Maryland, for example, the state reported reading about 29 million plates between January and May of last year. Of that number, about 60,000 — or about 1 in every 500 license plates — were suspicious. The main offenses: a suspended or revoked registration or a violation of the state's emissions inspection program. That accounted for 97 percent of alerts.
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