Silicon Valley Goes Dark: San Jose Police Encryption

Silicon Valley's transparency double standard

San Jose sits in the middle of Silicon Valley, where Apple, Google, Meta, and hundreds of startups have built businesses around collecting and monetizing user data. Your location, browsing history, photos, and private messages are the feedstock of the local economy.

On March 16, 2020, the San Jose Police Department encrypted all radio communications and ended decades of public access to scanner traffic. The same city whose economy runs on information decided its police department's communications were nobody's business.

March 16, 2020: the day before lockdown

On March 16, 2020, SJPD migrated to the Silicon Valley Regional Communications System (SVRCS) with full encryption enabled — the department's own training bulletin documents the date. That same day, Bay Area health officers announced the nation's first shelter-in-place orders, which took effect the following morning.

Scanner monitors who had listened to SJPD for decades found every talkgroup encrypted overnight. There was no advance public notice, no community input, and no City Council debate.

There's no documented evidence the timing was deliberate, but the effect was unmistakable: the switch happened while the public was consumed by an unprecedented emergency. Within weeks, police and the DA's office were reportedly fielding thousands of complaints about shelter-in-place violations — enforcement the public could no longer hear coordinated over the radio.

VTA mass shooting: May 26, 2021

Fourteen months after encryption, San Jose had its deadliest mass shooting. At 6:34 a.m. on May 26, 2021, a Santa Clara Valley Transportation Authority employee opened fire at a VTA rail yard, killing nine coworkers before taking his own life.

Contrast this with Highland Park, Illinois, where open scanner access helped residents escape during the July 4, 2022 parade shooting. In San Jose, the public depended entirely on official statements for information about whether the threat was contained.

Santa Clara County: near-total regional blackout

San Jose wasn't the only one. By the end of 2021, nearly every law enforcement agency in Santa Clara County had encrypted its radio communications, cutting off close to 2 million residents from public safety information.

The exceptions: the California Highway Patrol, which runs open dispatch channels statewide and uses separate methods to protect personally identifiable information, and Palo Alto, which encrypted in January 2021 but reversed course in August 2022 after community pressure. Verify current status for any agency in the RadioReference Santa Clara County database.

The DOJ directive: what it said versus what agencies did

Police agencies across California pointed to an October 2020 California Department of Justice directive (Information Bulletin #20-09-CJIS) as their reason for encrypting. The bulletin required agencies to protect personally identifiable information from the California Law Enforcement Telecommunications System (CLETS).

CHP has shown every day since 2020 that compliance is possible without full encryption. San Mateo County agencies kept their radios open by training officers on what to say over the air. The DOJ confirmed these approaches satisfied the directive.

Palo Alto reversed course

Not every Silicon Valley city stayed dark. Palo Alto reversed its encryption decision in August 2022 after 20 months of community advocacy led by Councilman Greer Stone. The city adopted the CHP model: keeping dispatch open while routing sensitive information through cell phones.

SB 1000: how close it came

State Senator Josh Becker (D-Menlo Park) introduced SB 1000 in 2022 to require California law enforcement agencies to adopt alternatives to full encryption. The bill passed the state Senate and died in the Assembly Appropriations Committee in August 2022.

Becker revived the effort in 2023 with SB 719, which stalled as a two-year bill. As of June 2026, San Jose is still encrypted.

What encryption cost Bay Area journalists

The San Jose Mercury News lost its most basic newsgathering tool when San Jose encrypted. For over a century, journalists used scanners to monitor breaking news, check police claims against real-time radio traffic, and get to scenes before information was shaped into press releases.