LA's Official Contact Tracing App 'Citizen SafePass' Tracks Your Moves to Stem COVID

Francesca Billington

Francesca Billington is a freelance reporter. Prior to that, she was a general assignment reporter for dot.LA and has also reported for KCRW, the Santa Monica Daily Press and local publications in New Jersey. She graduated from Princeton in 2019 with a degree in anthropology.

LA's Official Contact Tracing App 'Citizen SafePass' Tracks Your Moves to Stem COVID
Photo by engin akyurt on Unsplash

The company behind the crime-fighting app Citizen is now part of Los Angeles County's contract-tracing effort to stem the spread of the novel coronavirus.

County officials announced on Wednesday they will partner with the New York-based company and use its app Citizen SafePass. The bluetooth technology tracks people's movement and identifies those that may have been exposed to the virus, alerting them of danger.

"The information gathered through the SafePass app will help us learn more about the virus and how it is spreading through our communities and the county," said L.A. County Supervisor Kathryn Barger. "In collecting information, everyone's identity remains anonymous and all data is encrypted to ensure privacy and security."

Contact-tracing technology has long been seen as a way to speed up the laborious task of calling individuals who might have been exposed to the virus. Right now, the county employs 2,600 contact tracers to reach out to a web of nearly a quarter million individuals that either have the virus or have potentially been exposed.

But cities have struggled with how to do it correctly as questions of privacy continue to hover over the use of such technologies.

In announcing the partnership, Citizen CEO Andrew Frame said the company "will never share data with any authorities without the user opting in."

Photo by engin akyurt on Unsplash

Using Bluetooth to run contact tracing apps isn't new. Apple and Google teamed up to launch such an app in May. Other developers have pitched GPS-enabled apps that rely on monitoring a user's every move.

Citizen's app does both, combining bluetooth and GPS location-tracking to inform users if they've recently crossed paths with someone who later tests positive for COVID. When the app notifies you of the discovery, they'll send you a map of where the interaction happened.

That removes some of the anonymity, said Angel S. Diaz, an attorney specializing in liberty and national security at the Brennan Center for Justice. Diaz analyzed the app with a Coin Desk reporter back when it was being pitched to officials in New York in May.

"It's hard to anonymize data fully," he told dot.LA "The more you have contextual clues, it gets easier to re-identify things."

Diaz said Google and Apple appear to be trying harder to protect user privacy since their contact-tracing app won't inform users where the interaction happened.

Beyond the app's front-facing infrastructure, Diaz is concerned about where data from SafePass ends up down the road. People might be comfortable giving up location information with health officials now, Diaz said, but there's worry that under the terms of the privacy policy this information won't be deleted or it could later be shared with other authorities from other government agencies.

That could contribute to how many people will opt-in. If fewer people download the app, it's less effective.

"If you're someone worried about this data being used for police or your illness being shared with immigration authorities, you may be less likely to download the app because you don't want to put yourself and your family at risk," he said.

"The kinds of surveillance that contact tracing apps make available might be repurposed after the pandemic to do other kinds of police surveillance."

Moreover, it could harm communities of color by painting them as more dangerous, should they have higher rates of COVID infection.

County officials point out that the app is voluntary.

The app deletes GPS and bluetooth data after 30 days, said Citizen spokesperson Lily Gordon in an emailed response. And SafePass limits what information is provided to government agencies and will not sell or share data without permission.

"Citizen would only share anonymized, aggregate data with local health departments to help them identify COVID-19 hot spots or potential areas of concern," she stated. "Citizen does not share data with law enforcement agencies unless required by law, such as when they submit a subpoena or search warrants.

But she said, it could conduct "symptom surveys" for state or city government agencies.

The venture-backed Citizen is now listed as one of the top 20 free health apps in the Apple Store, Gordon said. The company has raised $59 million in capital and Frame has ambitions to grow the social app.

Citizen first emerged as Vigilante in 2016 and was taken off the Apple Store a week after launching in New York City over concerns it encouraged vigilantism by allowing users to collect and video footage of reported events.

It rebranded and popped up the following year as Citizen with a focus on safety.

The app is available in 20 cities and has five million users that it alerts to criminal activity and disaster near them with data collected from public information like police scanners. These safety alerts appear on a map of the user's city, marking more serious incidents like shootings with bigger red dots.

While the company has partnered only with L.A. County and San Joaquin County, SafePass is available to anyone in the U.S, with a smartphone. The app also offers access to a free at-home testing kit for those who have been notified of exposure through the app. Citizen said it is not charging Los Angeles County for the partnership.

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The New Face of Live Shopping: Whatnot’s $5B Journey

🔦 Spotlight

Hello Los Angeles,

This week has been a challenging one for many in our city as we continue to face the aftermath of the recent wildfires. Recovery efforts are in full swing, and as always, the strength and resilience of our community shine through.

If you or someone you know has been impacted, there are resources available to help navigate this difficult time:

  • Pacific Palisades Fire Damage Maps: View here

These tools can provide support, whether you’re looking for financial assistance, housing resources, or updates on affected areas.

While our community focuses on recovery, we’re also reminded of what makes LA unique: its unrelenting drive to build, create, and innovate. A great example this week comes from Whatnot, the live shopping platform co-founded in 2019 by Grant LaFontaine and Logan Head, which has just achieved a major milestone.

Whatnot announced it raised $265 million in Series E funding, valuing the company at an impressive $5 billion.

For those unfamiliar, Whatnot combines shopping and entertainment through live-streamed auctions. Think of it as a vibrant, interactive marketplace where sellers showcase everything from trading cards and collectibles to fashion items, all in real time. Buyers can bid during the stream, creating a sense of excitement and connection that feels more personal than traditional online shopping.

The company’s new funding—co-led by Greycroft, DST Global, and Avra Capital—will drive expansion into markets like Australia and bring improvements to seller tools, from inventory management to advanced analytics. But what stands out most is Whatnot’s focus on its people. CEO Grant LaFontaine announced plans to buy back $72 million in shares for long-term employees, a move that underscores the company’s dedication to sharing its success.

As we move forward, let’s celebrate stories like these that show how innovation thrives in LA—even amid challenges. Whether it’s supporting wildfire recovery, building the next great startup, or simply connecting with others, we each play a role in shaping the spirit of our city.


🤝 Venture Deals

LA Companies

  • Phase Four, a leader in advanced in-space propulsion systems, announced the first close of its Series C funding round, securing nearly 60% of the target raise, led by Artemis Group Capital, to ramp up production of its Valkyrie Hall Effect Thrusters to at least 250 units annually and develop cutting-edge propulsion technologies for defense and national security needs. - learn more
  • Proper, a next-generation supplement brand launched by fitness entrepreneur Amanda Kloots, secured investment from Ben Bennett's Beauty Accelerator, The Center, to redefine the supplement industry with innovative, nutrient-focused wellness solutions tailored for modern lifestyles. - learn more
LA Venture Funds
  • Sound Ventures participated in a $17M funding round for Reshop, a platform simplifying the returns process for consumers and merchants, with plans to use the funds to enhance their technology and expand their services. - learn more
  • LFX Venture Partners participated in a $30M strategic funding round for Shippeo, a Paris-based company specializing in real-time multimodal supply chain transportation visibility; the funds will support Shippeo's global expansion, particularly across North America and the Asia-Pacific region. - learn more
  • Amboy Street Ventures participated in a $15M Series A+ funding round for Granata Bio, a biotechnology company focused on developing advanced gene therapies; the proceeds will be used to accelerate the development of their pipeline and expand their research capabilities. - learn more
  • BAM Ventures participated in a $700,000 seed funding round for MX Locker, an online marketplace for buying and selling motocross gear and parts; the company plans to use the proceeds to enhance its platform and expand its user base. - learn more
  • Crosscut Ventures participated in a $7.15M seed funding round for SoloPulse, an Atlanta-based company developing advanced radar technology; the funds will be used to enhance their product development and expand market reach. - learn more
  • Starburst Ventures participated in Loft Orbital’s $170M Series C funding round, bringing the San Francisco-based satellite infrastructure provider’s total capital raised to $280 million, with the funds aimed at accelerating their "condosat" missions to simplify and expand access to space. - learn more
  • Overture VC participated in a $100M Series B funding round for Harbinger, a Southern California-based electric vehicle company specializing in medium-duty EVs; the funds will be used to accelerate the production of their electric vehicle platforms. - learn more
  • Muse Capital and Time BioVentures participated in an $18M Series A funding round for Conceivable Life Sciences, a New York-based biotech company developing the world's first AI-powered automated IVF lab; the funds will support their ongoing commercial pilot program in Mexico City and preparations for a U.S. launch targeted for early 2026. - learn more
  • B Capital Group participated in a $25M Series B funding round for Labviva, a Boston-based AI-driven procurement platform for life sciences; the funds will be used to accelerate product development, enhance marketing and customer support, and expand internationally. - learn more
  • Focalpoint Partners participated in a seed funding round for Kerna Labs, a San Francisco-based AI biotechnology company focused on advancing mRNA payload design for new therapies, with the funds supporting operational expansion and development efforts. - learn more

LA Exits

  • Intracom Systems, a pioneer in software-based communication solutions, has been acquired by IPC, a global leader in trading communications technology, to enhance IPC's SaaS communications offerings for the financial services industry. - learn more
  • Adexa, a provider of advanced supply chain planning solutions, has been acquired by Eyelit Technologies to enhance its Manufacturing Operations Management (MOM) and Manufacturing Execution Systems (MES) offerings and expand its market presence. - learn more
  • Caramel, a platform specializing in simplifying online vehicle transactions, has been acquired by eBay to enhance its offerings for secure and streamlined automotive buying and selling experiences. - learn more
  • ImaginAb, a biotechnology company specializing in antibody-based imaging and therapeutic solutions, has been acquired by Telix Pharmaceuticals to expand its next-generation therapeutic assets and biologics technology platform. - learn more
  • Sleepypod, a global leader in crash-test-certified safety harnesses and carriers for pets, has been acquired by Paw Prosper to enhance its commitment to pet well-being and expand its portfolio of innovative pet safety solutions. - learn more

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Standing Together Through the Flames

🔦 Spotlight

To our Los Angeles family,

This week’s wildfires have brought immense pain and hardship to our beloved city. Many of our friends, neighbors, and colleagues have faced evacuations, power outages, and the devastating loss of homes and livelihoods. Our hearts go out to everyone affected by this tragedy.

At dot.LA, we want to express our deepest sympathy to those suffering in this moment. We see your resilience and stand with you during this challenging time. This community has always been defined by its strength and compassion, and now is the time to come together in support.

If You or Someone You Know Has Been Impacted, Resources Are Available:

Evacuation Shelters:

  • Calvary Community Church: 5495 Via Rocas, Westlake Village, CA 91362
  • Ritchie Valens Recreation Center: 10736 Laurel Canyon Blvd., Pacoima, CA 91331
  • Pan Pacific Recreational Center: 7600 Beverly Blvd., Los Angeles, CA 90036
  • Westwood Recreation Center: 1350 Sepulveda Blvd., Los Angeles, CA 90025
  • Pasadena Civic Auditorium: 300 East Green Street, Pasadena, CA 91101
  • Pomona Fairplex: 1101 W McKinley Ave, Pomona, CA 91768
  • Stoner Recreation Center: 1835 Stoner Ave, Los Angeles, CA 90025

Animal Shelters:

Small Animals:

  • Agoura Animal Care Center: 29525 Agoura Rd, Agoura Hills, CA 91301
  • Baldwin Park Animal Care Center: 4275 Elton St, Baldwin Park, CA 91706
  • Carson Animal Care Center: 216 W Victoria St, Gardena, CA 90248
  • Downey Animal Care Center: 11258 Garfield Ave, Downey, CA 90242
  • Lancaster Animal Care Center: 5210 W Ave I, Lancaster, CA 93536
  • Palmdale Animal Care Center: 38550 Sierra Hwy, Palmdale, CA 93550

Large Animals:

  • Pomona Fairplex: 1101 W McKinley Ave, Pomona
  • Industry Hills Expo: 16200 Temple Ave, City of Industry, CA 91744
  • Antelope Valley Fair: 2551 W Avenue H, Lancaster, CA 93536
  • Los Angeles Equestrian Center: 480 W Riverside Dr, Burbank, CA 91506
  • Pierce College Equestrian Center: 7100 El Rancho Dr, Woodland Hills, CA 91371

Disaster Relief Information:

  • LA County Assessor: Information for property owners and FAQs about disaster relief.

Mental Health Support:

  • Los Angeles County Department of Mental Health: Crisis counseling and support for those affected. Access services through their website or call their hotline at (800) 854-7771.

Temporary Housing Support:

  • Airbnb: In partnership with 211 LA, offering free temporary housing for displaced residents. Spaces are limited; complete the form to be notified of availability.

Transportation Support:

  • Uber: Use promo code WILDFIRE25 for 2 free rides up to $40 each to/from active shelters.
  • Lyft: Code CAFIRERELIEF25 offers 2 rides up to $25 each for up to 500 riders, valid until 1/15.
  • Metro: Fare collection is suspended systemwide.

Staying Informed:

  • Watch Duty App: Provides real-time wildfire tracking, evacuation warnings, and updates.
  • Los Angeles Fire Department Alerts: Visit their website for the latest information on fire status and safety guidelines.

Safety Precautions:

  • Ready, Set, Go!: Personal Wildfire Action Plan by the Los Angeles County Fire Department.

To those in our community who are volunteering, donating, or offering aid in any form—thank you. Your efforts embody the spirit of LA: strong, compassionate, and unstoppable.

At dot.LA, we’re committed to amplifying stories of resilience and support. If you’ve seen inspiring acts of kindness or have resources to share, please let us know. Together, we can shine a light on the incredible ways this community is stepping up during these trying times.

In the days ahead, let’s hold tight to the bonds that unite us and remember that we are stronger together. The fires may scar the land, but they cannot dim the collective spirit of Los Angeles.

We’re here for you, and we’re with you.

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    A Strong Finish to 2024 for LA Tech: Crosscut Ventures Leads the Way

    🔦 Spotlight

    Happy Friday LA!

    As we close the book on 2024, Los Angeles has had a remarkable year in tech and venture capital. From groundbreaking funding rounds to industry-defining innovations, the city’s tech ecosystem has showcased its ability to adapt and thrive. Among the year’s final highlights was the announcement that Crosscut Ventures, one of LA’s premier early-stage venture capital firms, has added Jon Ylvisaker as its newest Partner.

    Crosscut Ventures’ Bold New Direction

    Announced in late December, Jon Ylvisaker’s appointment reflects Crosscut Ventures’ commitment to advancing its focus on the energy transition. Ylvisaker brings decades of experience in driving investments in energy technologies and digital infrastructure. As the founding partner and managing director of Yield Capital Partners, he led investments in startups and established companies shaping the future of sustainability. At Wolfacre Global Management, a Tiger Management hedge fund, he further honed his expertise in supporting impactful climate-focused solutions.

    Brian Garrett, Managing Director and Co-Founder of Crosscut Ventures, said, “Jon's extensive experience in climate and digital infrastructure investments, coupled with his impressive track record of bringing groundbreaking technologies to market, makes him the ideal partner to help lead our focus.”

    Since its founding in 2008, Crosscut has played a key role in shaping LA’s tech landscape. Ylvisaker’s addition reinforces the firm’s commitment to addressing global challenges like energy transition and sustainability, further solidifying its leadership in venture capital innovation.

    What’s Next for LA Tech in 2025

    The momentum from 2024 has set the stage for an even bigger year ahead. Entrepreneurs, investors, and innovators in LA are poised to take on new challenges and create meaningful change across industries.

    As we step into 2025, we want to thank everyone who helped make 2024 such a standout year. Here’s to another year of progress, innovation, and success. From all of us at dot.LA, Happy New Year!

    🤝 Venture Deals

    LA Companies

    • First Resonance, a company specializing in digital manufacturing software through its ION Factory OS, has raised a $20M funding round led by Third Prime with participation from Blue Bear Capital and others. This brings its total funding to $36M and will be used to accelerate product development, grow its customer base, and enhance support for advanced manufacturing sectors like aerospace, robotics, and clean energy. - learn more
    LA Venture Funds
    • Finality Capital Partners led a $17M Seed funding round for ChainOpera AI, a California-based company developing blockchain networks for AI-powered agents and applications, to accelerate product development, expand its team and enhance its blockchain and AI integration capabilities. - learn more

    LA Exits

    • Thirteen Lune, an inclusive beauty e-commerce platform, has been acquired by SNR Capital, marking a significant milestone in the platform's mission to amplify underrepresented beauty brands while fueling its next stage of growth. - learn more
    • Ergobaby, a leading brand in juvenile products known for its high-quality baby carriers, has been acquired by Highlander Partners. The acquisition aims to bolster Ergobaby’s growth, expand its product offerings, and strengthen its position in the parenting solutions market. - learn more

    Download the dot.LA App

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