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Police camera system tracking billions of license plates causes some pushback

Artificial intelligence startup Flock Safety is know for its automatic license plate readers, which police say help them solve crimes like kidnappings and stolen vehicles. While this technology has existed for some time, Flock is the first to centralize it into a single nationwide database that thousands of police departments can access at any time without a warrant. NBC News' Kevin Collier reports on the privacy concerns leading the pushback.