Drive your car through the small town of Royston, England, and your license plate will be photographed by a hidden camera and checked against a national police database, regardless of whether there is probable cause to suspect you have committed a crime. Simply passing through the city limits is apparently cause enough.

Royston, writes the Daily Mail, “has become the first [town] in Britain to have every car passing through it tracked by police cameras,” with “a set of police cameras installed on every road leading in and out of it, recording the number plate of every vehicle that passes them.”

The devices are known as Automated Number Plate Recognition (ANPR) cameras.

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