San Francisco police encrypted radio and ended a century of public access

What San Francisco chose to give up

San Francisco has the Sunshine Ordinance, a 1993 law giving the public broad rights to observe government proceedings. It's home to the Electronic Frontier Foundation and a tech sector that has spent decades preaching open access to information.

On December 12, 2021, SFPD became the largest police department in California to encrypt all radio traffic. For the first time since the department got radios in the early 20th century, the public was locked out.

The same city that banned police use of facial recognition in 2019 decided its officers' radio traffic should be inaccessible to the neighbors and journalists trying to follow their work.

The hybrid promise that didn't hold

In May 2021, SFPD announced a "hybrid system" — described as the first of its kind in California — that would preserve some public access.

SFPD framed what was coming as a partial measure. What arrived blocked essentially all radio traffic.

Timeline: From Open to Dark

The DOJ directive: same rule, different choices

SFPD cited a California Department of Justice mandate to protect personally identifiable information (PII) as its justification for encrypting. The DOJ directive did not require blanket encryption.

The California Highway Patrol, the state's largest law enforcement agency, chose open dispatch and routes sensitive information through cell phones or secure channels. CHP is proof that full encryption is a policy decision, not an obligation.

Media credentialing: better than nothing, not good enough

Unlike cities that locked everyone out, San Francisco created a credentialing program. Vetted journalists can apply for encrypted receivers and monitor SFPD radio in real time.

That preserves some accountability. Professional journalists can still independently observe police activity. But the program has real problems.

Read our detailed analysis of San Francisco's media access program for a deeper examination of this compromise model.

FriscoLive415 and the street-level workaround

Encryption changed San Francisco's scanner community rather than ending it. FriscoLive415, a 35-year-old cyclist, monitors multiple Bay Area public safety scanners simultaneously from his apartment and posts videos of street activity and police response in the Tenderloin and Mid-Market.

He has more than 13,000 followers on X and has broken news nationally, including footage of the Cruise self-driving car incident that led the DMV to ban autonomous vehicles in San Francisco.

But these alternatives are incomplete. During protests, use-of-force incidents, and active crime scenes, the public now depends entirely on official statements rather than anything they can verify themselves.

The surveillance record

San Francisco's record on surveillance and oversight does not run in one direction:

The EFF and ACLU have documented SFPD's history of surveillance overreach, including intelligence files on more than 100,000 San Franciscans in the 1970s. Radio encryption extends that pattern: more control over information flowing out of the department, less ability for the public to observe what police actually do.

San Francisco vs. Oakland

Oakland encrypted in September 2025, nearly four years after San Francisco. The two cities made the same decision differently.

San Francisco's credentialing program is imperfect but at least considered. Oakland's was a surprise. Neither city chose the CHP model, which would have kept dispatch open while protecting sensitive information.

What you can still monitor in San Francisco

Not all public safety traffic is encrypted. Residents still have some options:

What San Francisco demonstrates