Recently, the Sun Prairie Police Department (SPPD) has expanded its use of automatic license-plate readers (ALPRs), prompting concern among residents over surveillance and privacy rights.
The department now uses ALPR cameras both on squad cars and mounted on utility poles around town, supplied via vendor Flock Safety. According to Assistant Chief Ryan Cox, the system functions as an “immediate force multiplier,” enabling officers to identify wanted vehicles, vehicles used in violent felonies, or those on a “hot list” tied to recent crimes.
Not all residents are comfortable with the new technology. A longtime voiced unease that the license-plate and vehicle data could be obtained via open records requests, “I don’t like that this data is public. I like it less than if it were just private to the police. And I like all of that less than if it wasn’t recorded in the first place.”
ALPR systems automatically photograph and log every passing vehicle, then cross reference captured data against law-enforcement or private databases. An opinion from the UNC School of Law has speculated on the privacy of these systems. UNC stipulates that while there are clear law-enforcement benefits, the storage and retention of continuous vehicle-travel data can create a “mosaic” of a person’s movements, associations, and routines effectively tracking them without their knowledge.
Across the nation, the legal frameworks for ALPRs remain patchy. While some states have passed laws or adopted policies restricting sharing of ALPR data with federal immigration agencies or specifying retention periods, many communities continue to debate whether the benefits outweigh the privacy risks. (RELATED: Bipartisan Bill Seeks to Boost Wisconsin’s Veterinary Workforce)
Major Wisconsin counties such as Waukesha, Dane, Ozaukee La Crosse, and Eau Claire have all been reported to have installed these products or similar technology for their departments. (RELATED: GOP Warn of Water Contamination From Abortion Pills, Pushes ‘Catch Kit’ Mandate)
