Flock cameras are everywhere. Here's how they track cars.

Flock cameras read the license plates of all passing cars and then collect and store the data for future investigations. Mint Images RF/Getty Images Flock cameras read license plates and then collect and store the data for investigations. Critics say Flock's cameras enable mass surveillance and raise privacy and civil liberty concerns. Flock cameras can also misread plates, leading to wrongful detainment. Flock cameras are almost everywhere and often hide in plain sight. A Flock camera is an automated license plate reader, or ALPR, made by the public-safety technology company Flock Safety. The cameras are commonly installed along roads, at intersections, near neighborhood entrances, and around businesses or other private properties. When a vehicle passes, the camera captures an image and uses machine learning to turn its license plate, color, make, model, and other supported details into searchable information.