Federal Appeals Court Rules that License Plate Readers are not Good Enough to Justify Detaining Drivers
Police cannot rely solely on license-plate readers to pull over drivers suspected of breaking the law, a federal appeals court has ruled (pdf).
The decision arose from a case involving a female motorist in San Francisco who was wrongly detained after a police automatic license plate reader (ALPR) identified her car as stolen.
The ALPR, mounted in a squad car, misread one digit on Denise Green’s license plate, which triggered an alert that the vehicle was stolen. Per San Francisco Police Department policy, the officer in the ALPR-mounted car was supposed to verify he had the correct automobile, but didn’t. Then, a second officer responsible for pulling Green over also failed to notice the mistake, even though the wanted vehicle looked nothing like Green’s. Nevertheless, back-up was called in and four officers drew their weapons on Green, who was forced from her car and ordered to kneel on the pavement.
She was later released once the mistake was discovered.
The incident resulted in Green suing San Francisco, raising the question whether technology alone is enough to legally justify a search under the Fourth Amendment.
Green lost her first case in lower court. She petitioned the Ninth Circuit Court of Appeals to hear her case, which agreed and overturned the ruling.
“This case shows clearly the risks of blind reliance on technology for identification in criminal investigations,” Jennifer Lynch wrote at the Electronic Frontier Foundation. “If the ALPR camera had not alerted the first officer based on a false license plate read, Green never would have been stopped, and this tragedy could easily have been avoided.”
To Learn More:
New Ninth Circuit Opinion Calls into Question Blind Reliance on License Plate Camera IDs (by Jennifer Lynch, Electronic Frontier Foundation)
Error from License Plate Scanner Leads to Police Stop That Startles PV-Based Attorney (by Jay Senter, Prairie Village Post)
Denise Green v. San Francisco (Ninth Circuit Court of Appeals) (pdf)
Do License Plate Readers Invade Privacy, or Are They a Protected Form of Free Speech? (by Noel Brinkerhoff, AllGov)
License Plate Readers Collect Data on Millions of Americans (by Noel Brinkerhoff, AllGov)
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