San Francisco says it has tightened the rules for its license plate reader cameras. Starting October 5, 2026, records from the city’s Flock Safety system are supposed to leave the vendor’s platform after 30 days instead of remaining there for a year.
That sounds like the city is deleting license plate data sooner. But here’s the important detail: moving records off Flock is not necessarily the same as erasing them. Police can still retain the information internally for up to a year under the city’s existing policy. It’s a real change in who can reach the data, but not a one-month limit on every copy of it.
What changed, and what didn’t?
On September 29, Mayor Daniel Lurie announced tighter restrictions while reaffirming the city’s decision to use license plate readers. According to KQED’s coverage of the announcement, investigators would also have to connect searches to an incident or dispatch number and explain the reason for looking up vehicle information.
Under the new arrangement, records are removed from Flock’s platform after 30 days. Mission Local reported on October 30 that the information can be moved to an internal police system for another 11 months. During that longer period, officers seeking records for an active investigation need supervisory approval. The city’s one-year retention policy comes from an earlier ordinance, and shortening it further would require a separate policy change.
Why does the distinction matter? A record available through a vendor network may be accessible to more authorized users outside the city than one held internally by San Francisco police. Restricting outside access can reduce one risk without answering the separate question of how long the city should keep information about ordinary vehicles.
San Francisco isn’t abandoning license plate readers
The San Francisco Police Department’s 2026 surveillance report lists 400 fixed Flock license plate reader cameras, first installed beginning in March 2024. It also reports a trial involving two police vehicles equipped with Motorola license plate readers beginning in June 2026. These are different systems and should not be counted as additional fixed Flock cameras.
Police say the technology helps them find stolen cars, identify vehicles linked to serious crimes and locate missing people. In the same report, the department notes that reported vehicle thefts fell 44% in 2025 compared with 2024, while car break-ins declined 43%. It says license plate reader information helped with investigations.
Those are police-reported crime figures and an agency assessment, not evidence that cameras alone caused the declines. Changes in crime can reflect many influences, including policing strategies, reporting patterns and other conditions. It’s reasonable to take the department’s examples seriously without treating every drop in crime as a measured camera effect.
Why did the city need tighter controls?
The changes followed troubling discoveries about access to the city’s records. In its official surveillance report, the department says an audit uncovered 299 searches of San Francisco’s Flock network by Western States Information Network analysts on behalf of federal or out-of-state agencies. Those searches ran between May 1, 2025, and May 12, 2026, after access had been shared through a regional intelligence center.
The searches were not conducted by San Francisco police officers. The department says none of the 299 search reasons referenced immigration enforcement or reproductive health care. Still, San Francisco had not authorized federal or out-of-state access to its license plate reader data, so the access itself was a policy problem.
A separate issue involved a Flock feature called Nationwide Lookup. San Francisco police say it had permitted out-of-state queries for several months without their approval, between roughly August 2024 and February 2025. The company later disabled the feature for California agencies. The department’s report also describes an individual officer’s policy violation involving a search for a spouse’s stolen vehicle and the posting of images online. These were different incidents and should not be combined into one allegation.
In October, police issued Department Notice 26-112 on handling license plate reader evidence when federal or out-of-state agencies request case materials. It directs officers to exclude protected license plate reader data and refer questions to the department’s legal division. The online notice describes the guidance but says the signed policy can be requested through the department.
The argument isn’t only about technology
Privacy advocates argue that storing months of location information about drivers who have never been suspected of crimes invites misuse or unnecessary tracking. Public-safety officials counter that the history of a vehicle’s sightings can connect pieces of an investigation that were not obvious when the images were first recorded.
Both concerns lead to measurable questions. How often did a search help solve a case? How often was access granted to somebody who should not have had it? Can officials reconstruct who searched for a plate, why, and whether that search produced a useful lead? The city’s updated rules call for recurring audits, but those audits must be meaningful if they are to build public confidence.
What happens before the next contract?
San Francisco’s Flock contract is expected to come up for renewal in February 2027, according to KQED’s October 19 reporting. That gives local officials another occasion to examine the system’s performance and its safeguards. A renewal was not decided by the September policy announcement.
Nearby cities have taken different approaches, and California’s debates are far from settled. For another example, read our report on Fresno’s decision to leave Flock Safety while keeping license plate readers. San Francisco’s approach is different: it wants to keep the vendor and the cameras, but make access harder to misuse.
The lesson for residents is simple. When a city announces a new ’30-day limit,’ ask what happens on day 31. Who still holds the records, and who can search them? In San Francisco, that answer is more complicated than the headline might suggest.
Sources
San Francisco Police Department, 2026 biannual surveillance report; SFPD, Department Notice 26-112, published October 5, 2026; KQED, September 30, 2026: newly announced restrictions; Mission Local, October 30, 2026: 30-day vendor window and longer police retention; KQED, October 19, 2026: contract review and community debate.