Garrett Langley of Flock Safety on building technology to solve crime

Stripe's Cheeky Pint 1h44 8 min #6
Garrett Langley of Flock Safety on building technology to solve crime
Watch on YouTube

Summary

  • Flock Safety is a company that builds technology to help solve crime, starting with license plate-reading cameras and expanding into drones, AI-powered investigation tools, and a software platform that integrates citywide camera networks. Founded in 2017 by Garrett Langley after a firearm was stolen from a car in his Atlanta neighborhood and police had no leads, Flock grew from a neighborhood project into a $500M ARR business covering over 50% of the US population across 6,000+ cities. The company’s core insight was that most security systems focus on individual properties, but safety is a community-level problem that requires shared data across neighborhoods and agencies.

How Flock works

  • The original product was a solar-powered, 5G-connected camera that reads license plates on public roads, designed to work without existing infrastructure like fiber or power
    • The engineering challenge was running computer vision on solar power, which ruled out GPUs, so the team had to optimize edge processing carefully
    • Cameras are installed on Flock’s own poles, requiring permits, trenching, and concrete—the company pulled 77 permits per day last year and may be the largest general contractor in America
    • The only moving part is an IR-cut filter that switches between day and night modes, which wears out after a few hundred thousand cycles
  • The system maintains “hot lists” of stolen vehicles and wanted persons, integrating directly with the FBI’s NCIC database and local law enforcement lists
    • When a car is reported stolen locally, it appears on Flock’s system immediately, but takes up to 24 hours to propagate to the national FBI database via CSV files sent over FTP servers
    • Flock makes this real-time, which matters because a stolen car can travel far in 24 hours
  • The platform now includes FlockOS, which integrates cameras from any manufacturer across a city, and FreeForm, a search tool that lets operators query footage using natural language descriptions like “white Converse sneakers”
  • A recent example: a 911 call reported someone bleeding on the street, with the only clue being the suspect wore white Converse. The operator searched nearby cameras, found the individual, pushed video to the nearest officer, and made an arrest in about 17 minutes—a case that likely would have gone cold otherwise
  • Flock also builds drones that launch automatically from docking stations in response to 911 calls, reaching scenes in under 70 seconds compared to a 7.5-minute average police response time
    • Drones fly at 400 feet, making them inaudible and invisible to suspects, enabling safe tactical apprehensions
    • Primary use cases: ending dangerous high-speed vehicle pursuits, responding to 911 calls (many of which turn out to need no officer), and search-and-rescue with thermal cameras
    • A city like San Francisco needs roughly 12 drones to cover the entire area, since each can cover a 30-square-mile radius
    • Drones default to pointing cameras at the horizon during transit to avoid privacy concerns, and are only dispatched based on specific triggers like 911 calls or gunshot detection, not flown continuously

The US law enforcement landscape

  • America is unusual in having highly localized law enforcement—about 17,000 cities, each with their own police force—unlike most countries that have a single national force
    • This creates coordination problems: criminals cross city and state lines freely, but agencies historically shared information only by phone and fax
    • Cloud storage for law enforcement data was illegal in Florida until 2022 and Maryland until 2023
    • Flock’s platform enables cross-agency collaboration, like a human trafficking bust that led to 76 arrests across four states, coordinated through the system
  • Law enforcement is chronically understaffed, with some departments at 40% staffing levels, making force multiplication through technology essential
  • There’s a tension between local trust in police and distrust of federal agencies, leading some states like California to legislate restrictions on law enforcement collaboration with federal authorities
    • Flock has to navigate this by sitting in the middle, enabling collaboration where legally permitted and respecting restrictions where they exist
  • Crime surged dramatically during COVID, with homicides increasing 3-4x in many cities, driven largely by young males (16-22) escalating social media disputes into violence
    • The violence was heavily linked to online behavior: Instagram disputes leading to shootings, a subculture that recruits through lifestyle content on TikTok, Instagram, and Snapchat
    • Crime has since dropped back toward pre-COVID levels in most cities, though major cities still have significant problems
  • The most impactful technology for solving crime has been cell phone data (CDRs—cell data records), which triangulate location from tower connections
    • Criminals almost always carry their phones; Flock solved a case where a killer left their phone at home but was caught because their car was tracked on Flock cameras from LA to San Francisco and back
  • Drones are now a major asymmetric threat: criminal groups use them to case homes (flying with night vision to check if anyone’s home), smuggle contraband into prisons (payloads of 10-30 lbs carrying phones, drugs, guns), and operate with impunity because law enforcement is legally prohibited from shooting them down
    • South American cartels fly illegal drones through affluent Virginia neighborhoods to scope out homes for burglary
    • Law enforcement has only recently been allowed to fly beyond visual line of sight, while criminals have been doing it for years
  • Body cameras, initially pushed by police skeptics, have largely exonerated officers in most cases where foul play was alleged, revealing that many incidents involve mental health issues rather than misconduct
    • Flock’s cameras similarly provide objective data, shifting policing from targeting “dangerous neighborhoods” to focusing on specific stolen vehicles and crimes in real time, which has improved community relations in cities like Oakland

The corporate business

  • Flock’s corporate segment generates over $100M ARR and is the company’s fastest-growing business, focused on retail, healthcare, and logistics companies with large physical footprints
    • The focus has shifted from asset protection to employee safety over the past three years
    • When an employee is terminated, they can be automatically added to a localized hot list so security is notified if they return to campus
    • Executive protection uses vehicle tracking to flag when a vehicle visits both a CEO’s home and corporate headquarters on the same day, suggesting the executive’s identity may be compromised
  • A notable case involved criminals stealing multi-million dollar robotic surgical arms from hospitals by showing up in fake uniforms and convincing clinical staff they were repair technicians
    • Flock connected the healthcare provider with federal authorities since the equipment was being exported internationally
  • Organized retail crime has shifted from storefronts (CVS locking up products, In-N-Out leaving Oakland) to distribution facilities, where loads are larger and the crime is more sophisticated
    • One Eastern European group bought a legitimate freight broker company, won bids with low prices, loaded trucks with product, drove away, and dissolved the company—stealing $7 million in a single day
    • Liability is complicated because insurance coverage depends on where in the delivery chain the theft occurs

Privacy and civil liberties

  • Flock operates on public roads where there is no constitutional expectation of privacy for license plates, but the company acknowledges the controversy around physical-world surveillance being more visible than digital tracking
    • Langley argues that people already allow extensive location tracking through phone apps and data brokers, but accept it because it’s invisible
    • Every action in Flock’s system is audited and stored in perpetuity, with audit logs publicly available
    • The company advocates for data retention limits (7 days for live video, 30 days for license plate data) to prevent abuse while preserving investigative value
  • Flock does not do facial recognition, partly because it’s politically controversial and banned in thousands of US cities
    • Langley argues for a nuanced approach: facial recognition and other advanced tools should be permitted for serious crimes like homicides and crimes against children, but not for minor offenses like shoplifting
  • The company has a full team of constitutional attorneys who review new products before launch to ensure they comply with the Fourth Amendment
    • For drones, this means not flying them continuously (which was ruled an unconstitutional search in the Baltimore Carpenter case) and defaulting camera orientation to the horizon during transit

Competitive landscape

  • Flock competes primarily with Motorola Solutions ($90B market cap, 120 years old, dominates land mobile radio with 80% global market share) and Axon ($40B market cap, started as Taser, now does body cameras, dash cameras, and software)
    • Every city is a competitive battleground against both companies
    • Motorola’s radio contracts are enormous—San Francisco County’s contract is worth $200M—and Langley sees an opportunity since the radios are over-engineered for rare disaster scenarios
    • Axon entered the license plate reader market as a direct competitor to Flock
  • The market has attracted many VC-backed competitors, but Langley believes consolidation is inevitable because the buyer universe is finite (a finite number of cities and police departments)
    • Motorola has done 40 acquisitions in two years, Axon did five last year, and Flock did one
  • Flock’s hardware business required massive upfront capital expenditure (the “J-curve”), and the company expanded too quickly into too many products and customer segments
    • The core camera business is now profitable and generating hundreds of millions in operating cash flow, but newer products (drones, people-focused cameras, trailers) are at the early, cash-burning stage
    • The company has paused new hardware product development to focus on scaling existing lines

Hardware and supply chain lessons

  • Hardware forecasting must be done 12-18 months in advance and at the geographic level, not just product level, because installation requires local permitting and labor
    • The company once wildly overproduced and had warehouses full of unsold product
  • Every hardware design decision is a “one-way door” costing millions of dollars and locking in the design for 5-10 years, unlike software where changes are reversible
  • Supply chain risk is a full-time team’s job: a capacitor that goes up 4x in price because Apple chose it for a future iPhone can force a complete redesign
    • The company risk-purchases the cheapest, highest-risk components early and designs products with multiple substitute parts for critical components
    • Even non-cutting-edge components like capacitors and memory are affected by AI data center buildouts and consumer electronics demand
  • Field operations are the largest cost: a third of the company digs holes, drives bucket trucks, and maintains equipment, with driving being the biggest expense in repairs
    • The company uses predictive maintenance, replacing parts proactively when nearby rather than waiting for failures

International expansion

  • Flock is mostly focused on the domestic US market, which Langley believes can support $5-15B in revenue
    • International expansion is complicated by hardware localization, government nuance, and competition from subsidized Chinese manufacturers like Hikvision
    • In a major Mexican government deal, Flock lost to Hikvision despite offering better technology and data sovereignty (domestic data storage) because Hikvision’s price was roughly 10x lower, likely subsidized by the Chinese government
    • This mirrors China’s strategy in Africa, where they built 5G infrastructure at low cost with 100-year bonds, effectively giving the Chinese government access to those countries’ data
    • Even in NATO countries and Australia, Chinese-manufactured cameras dominate because of low prices

What’s next

  • Flock’s long-term goal is not just solving crime but preventing it, because every arrest represents a failure—a victim, a person entering a broken prison system, and enormous societal cost
    • The company launched the Thriving Cities Fund, investing in local businesses (restaurants, nail salons) in cities that adopt Flock’s platform, creating jobs for 16-year-olds who might otherwise turn to crime
    • The fund generated 21% IRR last year, and Langley wants to deploy hundreds of millions to billions of dollars this way
  • Langley is exploring products or programs that give non-violent, opportunistic criminals a second chance without prison, since incarceration almost guarantees they’ll become violent and reoffend
    • He hasn’t figured out what this looks like yet—it might not be software—but sees it as essential for a for-profit company that genuinely wants to reduce crime and prison populations
  • The vision is to expand Flock’s role from the middle of the crime timeline (detection and investigation) to both ends: prevention before crime happens, and rehabilitation after
Back to Stripe's Cheeky Pint