Law enforcement agencies across the country have installed Flock Safety cameras at intersections, neighborhood entrances, and roadways to build searchable networks of vehicle data. Prosecutors increasingly rely on this footage to place a vehicle near a crime scene at a specific time. What that evidence actually proves, however, is considerably more limited than many people realize, and understanding those limitations is a meaningful part of building a criminal defense.
What Flock cameras actually capture
Flock Safety cameras are automated license plate readers (ALPRs). They are fixed, rear-facing cameras designed to photograph passing vehicles and use artificial intelligence to read license plates and tag vehicle characteristics such as make, model, color, and body type. That is the full scope of what they record.
Flock cameras do not capture facial images. They do not record who is behind the wheel. They cannot identify the driver. What they produce is a record that a particular license plate was present at a particular location at a particular time. That is a meaningful distinction, and it is where the evidentiary limitations begin.
Why plate data does not identify a person of interest
The gap between “this vehicle was here” and “this person was here” is the central weakness in Flock-based evidence. Several factors widen that gap in ways that matter at trial.
First, the registered owner of a vehicle is not necessarily the driver. Family members, friends, coworkers, and others may share access to the same vehicle. Placing a plate at a scene does not place the registered owner there, let alone any particular person. The prosecution must bridge that gap with additional evidence, and when that additional evidence is thin or absent, the Flock data standing alone does not establish identity.
Second, license plates can be stolen or cloned. Criminals who are aware of ALPR systems have been documented using fraudulent plates to deliberately generate misleading records. A match between a plate and a database record does not confirm the vehicle bearing that plate was aCtually the registered vehicle.
Third, Flock cameras rely on AI to read plates, and that AI produces errors. Research has documented that ALPR systems misread plates in conditions including low light, rain, partial obstructions, high vehicle speeds, and certain plate formats and colors. A misread that implicates an innocent vehicle is not a theoretical concern. It is a documented real-world outcome.
These limitations do not eliminate Flock camera evidence from a case, but they do mean that evidence should be challenged rather than accepted at face value. The strength of the identification depends entirely on what else the prosecution has to corroborate it.
How defense attorneys challenge Flock evidence
A thorough defense review of Flock camera data should address several questions. Was the plate read correctly, and can that read be verified against the actual image? Who else had access to the vehicle at the relevant time? Is there any independent evidence placing the defendant, rather than merely the vehicle, at the scene? How long was the data retained, and what is the chain of custody from the camera to the courtroom?
Defense counsel can also examine the camera’s placement, field of view, and calibration history. If the camera was malfunctioning, poorly positioned, or producing degraded images at the relevant time, that affects the reliability of the resulting data. In some cases, the defense may retain a technical expert to evaluate the accuracy of the AI system’s read under the specific conditions present when the image was captured.
Courts have grappled with Fourth Amendment questions surrounding ALPR networks, and while most have upheld public-road surveillance under the third-party doctrine, some jurisdictions have enacted statutory restrictions on how long this data can be retained and who can access it. Those rules vary by state and by agency contract.
What to do if Flock camera data is part of your case
If you have been told that Flock camera footage places your vehicle near the location of an alleged crime, that is not the same as evidence that places you there. The difference between those two things is exactly where your defense begins.
Speaking with a criminal defense attorney as early as possible gives you the best opportunity to obtain, review, and challenge the camera data before it goes unchallenged into the record against you.