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A San Jose police officer searched stored ALPR data to help his cousin stalk their spouse. Just one more reason the courts must require officers to get a warrant first.

eff.orgRequire Police to Get a Warrant to Search ALPR DataThis post was co-written by Andi Cao, an EFF legal intern.Automated license plate readers (ALPRs) are mass surveillance. They photograph every passing car and log where and when it was captured, build...

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The problem goes deeper than a rogue officer: ALPRs photograph every passing plate, not just suspects'. So warrantless access isn't just looking someone up — it's retroactive location tracking on people never suspected of anything. That's why retention limits matter as much as warrant rules.

A warrant is not enough. Illegal searches happen every day from beat cops and traffic stops. These systems should not be collecting data and storing it, if you have a warrant then begin tracking the car. Imagine a world where every phone call is recorded waiting on the warrant to access it.