San Jose Police Restrict License Plate Data
Citing privacy concerns, the San Jose Police Department has tightened its policy on accessing data from automated license plate readers (ALPR). The new rules restrict which officers can view the data and under what specific circumstances, following public scrutiny of the technology.
The San Jose Police Department operates a network of nearly 500 automated license plate readers throughout the city, capturing millions of data points each month. This data, which includes the time, location, and an image of the vehicle, is stored for a full year, a significantly longer period than the 30 days many other cities retain such information for. This policy revision follows a lawsuit filed in November 2025 by the Electronic Frontier Foundation (EFF), the ACLU of Northern California, and other civil rights groups. The lawsuit alleges that allowing law enforcement to search this vast database of driver movements without a warrant violates the California Constitution's protections against unreasonable searches and guarantees of privacy. The technology provider for San Jose's ALPR system is Atlanta-based firm Flock Safety. Civil liberties advocates argue that the scale of this surveillance program creates a detailed and searchable history of residents' movements, including visits to sensitive locations like medical clinics or places of worship. Previously, research showed that San Jose police had allowed other California law enforcement agencies to search its ALPR data on behalf of federal agencies like the FBI and DEA. This raised concerns about potential violations of California's Senate Bill 34, which restricts sharing such data with out-of-state agencies, and Senate Bill 54, which limits cooperation with federal immigration enforcement. Despite the privacy concerns, the SJPD and city officials have defended the ALPR program, crediting it with solving numerous high-profile crimes. They have cited successes in cases of organized retail theft, robberies, assaults, and even an attempted murder of a police officer as justification for the technology's expansion. The new policy aims to create stricter internal controls, but critics maintain that the core issue remains the collection and retention of location data on a massive scale without judicial oversight. The outcome of the ongoing litigation could have significant implications for how law enforcement agencies across California utilize this powerful surveillance tool.
