More License Plate Reader Mission Creep: School Residency Verification, Background Checks, and Noise Complaints | Electronic Frontier Foundation
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More License Plate Reader Mission Creep: School Residency Verification, Background Checks, and Noise Complaints
DEEPLINKS BLOG
By Dave Maass and Rindala Alajaji<br>May 26, 2026
More License Plate Reader Mission Creep: School Residency Verification, Background Checks, and Noise Complaints
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An EFF analysis of millions of searches of Flock Safety automated license plate reader (ALPR) data by police has uncovered a troubling pattern: in the absence of a warrant requirement to search ALPR databases, law enforcement agencies have moved beyond specific investigations to use these surveillance networks for virtually any whim.
Our findings suggest that the absence of a warrant requirement has fostered a culture of unrestricted access to sensitive location data, allowing agencies to leverage that data beyond the scope of specific criminal investigations.
As a refresher: Law enforcement agencies lease or purchase camera systems from Flock Safety and then mount them by the side of the road and at intersections to document every vehicle that passes, including the plate, make, model, color and distinguishing characteristics, along with the date, time and location of where it was seen.
Law enforcement's talking points—often scripted by the company itself—trumpet their role in solving high-stakes crimes. But the data reveals a different story. What they're not saying is that ALPRs are also frequently used for extremely low-level investigations, such as verifying whether a student lives within a particular school zone. In some cases, police have even used this tech to conduct employment background checks and investigations into loud music complaints. Recently, a motorcyclist was even targeted for simply holding a cell phone while riding.
The reach of this ALPR surveillance is amplified by the nature of the indiscriminate sharing these technologies encourage. Most agencies choose to share broadly, often as part of a nationwide pool, making it common for a single city's system to be searched hundreds of thousands of times each month. By analyzing these "network audit logs," privacy advocates and journalists have uncovered evidence of the technology being used to surveil protesters, abortion-seekers, immigrants, and even ethnic Roma populations.
While these high-profile abuses are shocking, the more mundane uses are also problematic, signaling a massive, unchecked mission creep that has turned an alleged “crime-fighting” tool into a universal tracker of everyone’s movements.
Residency Checks
School systems in the U.S. conduct "residency verification" investigations of their parents or guardians to ensure enrolled children live in the district. To carry out these checks, some school districts have enlisted law enforcement officers for help, leveraging ALPR databases to track the comings and goings of families across the region.
Buford City Schools in Georgia, which serves only about 6,000 students, illustrates the scale of this prying. Between January 2025 and March 2026, school police ran more than 375 searches where officers listed school residency verification, or simply "RV," as the reason for the search. That accounts for more than half of all ALPR searches in that period, and in those three months of 2026, three-quarters of all searches were related to residency verification.
School officials stand by the searches. "[B]ecause Buford City Schools is a highly sought-after district, we experience ongoing challenges with residency fraud," a spokesperson told Appen Media, which shared the email with EFF. "Flock Safety is one of the tools we use to verify residency and protect the integrity of the Buford City School System for families who live within the district."
A search of ALPR data will show a lot more than whether a family lives within the right zone. In these Buford cases, officers ran some searches across more than 5,800 different networks nationwide....