LA Times: How technology [LPN scanners] helped crack the Kansas City highway shooter case

LA Times: How technology helped crack the Kansas City highway shooter case by Matt Pearce. Police license plate scanners helped find the person alleged to be the highway shooter:

According to a probable cause statement, authorities got their big break a week before his arrest, on April 9, when a woman came forward to say that she thought she may have been followed by the highway shooter.

She hadn’t been shot at. But she recalled a frightening evening in March when a man had stopped his car in front of her, stared at her, and then drove alongside her as the road narrowed until, ultimately, one driver would be forced to go in front of the other.

The woman told police the other driver tried to slow down to get behind her; instead, she braked suddenly and got behind the other driver — also taking the chance to write down his license plate number, which was for an Illinois plate.

Investigators plugged the plate number into a database for license-plate readers. Kansas City police have such automatic readers installed on their cars. Such readers photograph license plates and log the time, location and date of the encounter, feeding millions of plate numbers into a massive database that has drawn criticism from civil-liberties advocates as a potential invasion of privacy. The scanners record any plate they detect, not just those potentially linked to wrongdoing.

In this case, a search for the plate number revealed several hits from 2013, when readers had scanned the plate on vehicles parked in front of an address in Grandview, according to court documents.

At different times in 2013, scanners spotted the plate affixed to at least two different cars at that address. A scanner also captured a photo of a green Neon, sitting in the driveway next to a car with the Illinois plate.

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