Arizona police departments are increasingly using automated license plate readers (ALPRs), such as those from Flock Safety, to track vehicle movements. While police cite the technology’s utility in solving crimes, recovering stolen vehicles, and locating missing persons, residents and civil liberties advocates express serious concerns about privacy. The core issue revolves around data sharing: ALPR data is stored and can be accessed by various agencies, raising fears that federal entities like ICE, even without direct contracts, can obtain granular location information. This “side door” access, through local law enforcement data sharing, bypasses direct oversight and creates a de facto surveillance network, prompting debates and contract reconsiderations in cities like Chandler.