Flock’s ‘Vehicle Fingerprint’ system enables law enforcement tracking without license plates

Flock’s system, described in a 2024 company presentation, introduces a method called “Vehicle Fingerprint” that allows law enforcement to identify vehicles using features such as decals, bumper stickers, roof racks, and temporary or unique state tags. This approach enables tracking even when license plate information is unavailable or incomplete.

The company’s presentation highlights that police officers can search this data to “build stronger cases with less information upfront,” including the ability to locate multiple vehicles believed to be moving together. Flock refers to this capability as a “multi geo search.”

The technology is framed as a tool for law enforcement efficiency, but it also underscores the growing sophistication of surveillance infrastructure that operates beyond traditional license plate recognition. The system’s reliance on metadata such as vehicle decals and racks expands the scope of what can be tracked and linked to individuals.

Commentary accompanying the report notes that such tracking methods predate AI and have long been used in other contexts, such as cell phone location data analysis. Experts warn that broad access to such data enables persistent tracking and association mapping, which can be used to infer networks of relationships or habitual patterns of movement.