How the data sharing actually works
Flock Safety sells its cameras to two distinct customer types: law enforcement agencies and private entities like HOAs, apartment complexes, businesses, and schools. Both types of customer use the same hardware and the same cloud platform.
The key feature that makes Flock commercially attractive to private buyers is called the "Flock Safety Network." When a private customer installs a camera, they can opt into this network, which automatically shares their camera's plate reads with any law enforcement agency that has a Flock account and has been granted access.
In practice, most HOA cameras are opted into the network by default. The HOA's contract with Flock typically includes a clause permitting this sharing. Residents of the HOA are rarely informed that their comings and goings are being logged and shared with police.
What data is shared
Every plate read includes: the license plate number, a timestamp, GPS coordinates of the camera, a full-frame photograph of the vehicle, a cropped photograph of the plate, the vehicle's direction of travel, and an AI-generated description of the vehicle's make, model, color, and body type.
This data is uploaded to Flock's cloud within seconds of capture. Law enforcement officers can search the database by plate number, vehicle description, time window, or geographic area. A detective in one city can search plate reads from an HOA camera in a different city — or a different state — if both are on the Flock network.
Flock also offers an "ALPR Alerts" feature that notifies officers in real time when a plate on a hot list — stolen vehicles, wanted persons, Amber Alerts — passes any camera on the network, including private HOA cameras.
Is this legal?
Under current federal law, yes. The Fourth Amendment protects against unreasonable searches and seizures, but courts have consistently held that license plates displayed in public view carry no reasonable expectation of privacy. Because the plate is visible to anyone on the street, photographing it and logging it does not constitute a search under the Fourth Amendment.
The legal picture is more complicated at the state level. A handful of states — including New Hampshire, Maine, Virginia, Illinois, and Minnesota — have enacted statutes that limit how long ALPR data can be retained or restrict who can access it. In most states, however, there is no law preventing an HOA from sharing plate data with police, and no law requiring the HOA to tell residents it is doing so.
Privacy advocates argue that the aggregation of plate reads over time creates a detailed record of a person's movements that is qualitatively different from a single observation. The Supreme Court's 2018 decision in Carpenter v. United States, which required a warrant for historical cell-site location data, has been cited as a potential basis for challenging long-term ALPR surveillance — but no court has yet applied Carpenter to ALPR data.
What residents can do
If you live in an HOA with Flock cameras, you can request a copy of the HOA's contract with Flock Safety under your state's HOA disclosure laws. Look for language about the Flock Safety Network and data sharing with law enforcement.
You can also attend HOA board meetings and ask the board to opt out of the Flock Safety Network, or to adopt a data retention policy that limits how long your plate reads are stored. Some HOAs have agreed to these requests when residents organized.
If your HOA is in a state with an ALPR retention law, you may be able to file a complaint with the state attorney general if the HOA or its law enforcement partners are retaining data beyond the legal limit.