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Police departments throughout the Midpeninsula are following in the footsteps of the Palo Alto Police Department, which on Jan. 5 abruptly announced it would immediately encrypt its dispatch radio communications — a longtime source of information for residents and the news media — to protect certain private information from being transmitted publicly.
The Menlo Park, Atherton and Mountain View police departments all state that they plan to completely encrypt their communications, choosing the more stringent of two options for complying with a California Department of Justice policy that aims to protect information such as license plate numbers, names, street addresses, phone numbers and other private information. The less stringent option is to encrypt only the private data, which is accessed through the California Law Enforcement Telecommunications System (CLETS) and could be used for identity theft. Encrypting the information also gives privacy to victims of crime.
The Department of Justice requires encryption of “specific information” disseminated through radio traffic “while allowing for radio traffic with the information necessary to provide public safety,” according to an October bulletin.
But the total encryption of a source of information sets a dangerous precedent, according to watchdog organizations, including the Electronic Frontier Foundation and Reporters Committee for Freedom of the Press.
One of the fundamental purposes of access to the dispatch transmissions is so the public has knowledge of information about their communities. It’s why the press access is so important, said Aaron Mackey, staff attorney for the Electronic Frontier Foundation.
The move to encrypt, while recent for local police departments, has already stirred up controversy in other areas of the country, including Colorado and southern California. In some jurisdictions, news organizations and law enforcement have tried to come up with solutions that walk the line between continuing to provide vital access to police activity while also shielding private information from public view. With high price tags and clunky interfaces associated with these workarounds, however, news organizations say the jury is still out as to whether an alternative to total encryption can be found.
Falling in line
Palo Alto’s police department began encryption in early January, but others are planning to enact the change within the next three years.
Menlo Park Police Department is currently working with its radio vendor for a redesign of its current radio system with a projected date of no later than December 2023, said Tracy Weber, communications and records manager.
Atherton police Chief Steve McCulley said that his department will need to upgrade its communications center and radios. He estimated the cost at $250,000. The department plans to be compliant with the state mandate by 2023. The Atherton police have just one radio communication channel and can’t switch to other frequencies to encrypt specific information, he said.
“It’s an unfunded mandate (and is) quite a financial impact on a small agency like ours,” he said.
Relaying the private information by computer or cellphone, separately from the radio, would be too difficult. Having to leave a person’s property and go back to the patrol car would compromise officers’ safety, he said.
“It’s not an efficient way to provide that information. Oftentimes (we) need to have that information as soon as we can over the radio. We have no choice but to move to encryption,” he said.
Likewise, Mountain View Police Department spokeswoman Katie Nelson said using both the radio and a separate channel for sensitive information could jeopardize officers’ safety.
“An officer stops someone and checks their information over the air to then be told by the dispatcher that the person is a wanted felon considered armed and dangerous. This type of information is critical to know, not only for the officer dealing with the person, but also to others working in the city so they can instantly respond and assist,” she said.
Also, more staff would be needed.
“It would require additional staffing in the emergency communications center to monitor an additional radio channel,” she said.
East Palo Alto police Chief Al Pardini said his department is looking into encrypting its communications in 2023.
Currently, the San Jose, Morgan Hill and Sunnyvale police departments have made the switch to encrypted radio channels, Nelson said. Mountain View plans on making the transition in March. Every law enforcement agency within Santa Clara County will be switched over to encrypted transmissions by the end of this year, she said.
Alternatives for access
For news organizations, the loss of access to police radio transmissions is thorny.
The FBI and the California Department of Justice (DOJ) maintain that media members are not authorized to receive information that is obtained from the California criminal telecommunications system, Atherton’s Chief McCulley said. A person receiving CLETS information must have “a right to know” the information and a “need to know” of the information under DOJ and FBI mandates.
“I understand from the media standpoint it’s kind of like radio silence,” Sunnyvale Capt. Hank Syu said.
Some police departments throughout the country offer a way for credentialed media to listen in on radio transmissions: decryption licenses.
A license with the Denver Police Department in Colorado allows the media to utilize a decryption “key,” which gains limited access to specific police channels and transmissions. While the decryption is offered at no cost, the media organizations must purchase specific radios, have liability, worker’s compensation, commercial general liability, media professional liability and cyber liability insurance policies, according to a copy of the licensing agreement.
They can be prohibitively expensive, however, and the terms of use can be burdensome, said Mailyn Fidler, a legal fellow for the Reporters Committee for Freedom of the Press’ Technology and Press Freedom Project.
Fidler said those fees and the cost of specified equipment can amount to thousands of dollars, effectively cutting out small news organizations.
Encryption of radio transmissions in 2018 in Riverside County, California, led to a legislative attempt to continue access by the news media.
‘I understand from the media standpoint it’s kind of like radio silence.’
Hank Syu, captain, Sunnyvale Department of Public Safety
Then-state Assemblyman Todd Gloria introduced a 2019 bill, AB 1555, that would have required any law enforcement agency to provide access to the encrypted communications to “a duly authorized representative of any news service, newspaper, or radio or television network, upon request.” AB 1555 went through revisions in the assembly and state senate before Gloria withdrew it due to its failure to make it to a vote under legislative deadlines.
Nick Serrano, Gloria’s communications director, told the Desert Sun newspaper of Palm Springs at the time that they noticed a nationwide trend toward police encryption of radio communications.
“We believe news media have a right to access police radio communications. As much as this is an issue of transparency and right-of-access, Assemblymember Gloria also sees this as a public safety issue. We rely on media outlets to provide emergency information to the public and much of that is garnered through their access to police radio communications.”
Mackey, of the Electronic Frontier Foundation, said legislation would probably be the only way the media would gain access to the encrypted transmissions. California law currently gives journalists the right to access emergency scenes, but there is not a similar right to access the police communications.
“The hard part is that I don’t know, at least in California, that the public has a legal right to access the communications. As a matter of public policy, it’s essential, but it’s not a right of access as a Constitutional right of access,” he said.
Though the legislation failed to progress, one Riverside County police department found a way to continue providing some level of information to the news media.
In a phone call on Wednesday, Lt. William Hutchinson of the Palm Springs Police Department described how his department provides media access to its computer aided dispatch (CAD) system, which offers call information in real time. The press page is different from the one the police see in that Hutchinson can control what information goes out. He regulates traffic stop information, for example, because he doesn’t want to release information about the location of unmarked patrols. But violent crimes, thefts and other incidents that affect the community are listed.
A map with icons and a log show the time, location, type of crime, incident number and if the call is active. The public has access to a separate police log later, after the incidents have closed.
The system cost less than $2,000 to create and about $1,000 to add on to the current CAD program, he said.
Julie Makinen, executive editor at The Desert Sun, said she applauds the Palm Springs Police Department for trying to come up with a solution. But “the fact is, it’s not the same as listening to the scanner,” she said.
One can always listen to the scanner in the background while working or listen on a portable scanner while driving, she said. The CAD-access website needs to be continually refreshed and it only offers one line of information out of a long stream of scanner traffic. The information doesn’t tell news staff whether an incident that starts off as innocuous has escalated into something worse, she added.
“A domestic violence incident that turns into a police-involved shooting doesn’t show up on a page with only one line,” she said.
Local news media are conduits on behalf of a community, especially if there’s a school shooting or other emergency incident.
“I think it’s critical for public safety,” she said of media access to the transmissions. “The media is a partner, informing the public and directing people away from the site,” she said.
The encryption “is a solution to a problem that doesn’t exist,” Makinen said.
The Almanac Staff Writers Kate Bradshaw and Angela Swartz and Mountain View Voice Staff Writer Kevin Forestieri contributed to this story.
The Almanac Staff Writers Kate Bradshaw and Angela Swartz and Mountain View Voice Staff Writer Kevin Forestieri contributed to this story.
The Almanac Staff Writers Kate Bradshaw and Angela Swartz and Mountain View Voice Staff Writer Kevin Forestieri contributed to this story.
West Menlo Park schools end lockdown, authorities say suspect died of self-inflicted gunshot woundDecember 16, 2025 1:31 pm
Encryption is a tough issue and one that should not be unilaterally decided upon by any government body without full disclosure and discussion among interested parties. Private entities, such as corporations, obtains huge amounts of data on citizens already and sell it to others, both government and private, without much oversight. We should not go down this road without striking a reasonable compromise between security and privacy. When it comes to policing policy we must be even more careful as police have extraordinary power over citizens and are often perceived as operating without sufficient accountability as to how they uphold our constitutional rights which they may find inconvenient.
Police radio transmissions need to be encrypted for the protection and safety of police officers, as well as for victims. Bad guys listen to police radio channels all the time!!! There is no reason for the consuming public or the news media to be listening to police radio transmissions.
Why not release recordings of all radio traffic after a 24 hour delay?
Delayed release of radio transmissions provides no threat to police operations that occurred 24 hours ago.
The same is true of body camera footage.
Transparency is essential to ensure public support and confidence in our police.
Incredulous that the Town of Atherton also wants to spend $250,000 on encrypting their police transmissions, reported on the same day the police blotter noted a single call from a resident of the Town who said someone threatened her over the phone! Call logged .. SMH
So reminiscent of the bumper sticker ‘It will be a great day when all the schools in America have enough books for every student and the Air Force has to have a Bake Sale to buy a new Bomber’.
Is there no better way to spend $250,000? Almost as ridiculous as the Menlo Park Police request last year to spend $500,000 approx. on a Mobile Indecent Command Center (when Palo Alto have one and Menlo Park FD have one). Thankfully someone saw some sense to that!
Atherton’s police department cannot stop home robberies occurring on a weekly basis, week after week, even though we pay them the majority of the town’s budget.
$250K to encrypt their scan transmissions? $250K would pay for private patrol for a year that would likely have a meaningful effect on these robberies!
Talk about continuing to double down on bad bets.
Thoughtful:
and yet the citizens of your town continue to over pay ridiculously for police protection. Could it be because then they don’t get traffic tickets or get driven home when they are DUI? Those are the only two reasons that make any sense for people that are smart enough to get incredibly wealthy and yet make the stupid decision to waste millions on a police department.