Fixed cameras vs. movement tracking
Each Flock unit is a stationary plate reader mounted on a pole (Yahoo Tech). What makes it powerful isn't a single camera — it's the network effect: plate reads from multiple locations, joined by timestamps, sketch where a vehicle traveled. That's how a plate logged at 8:01 on one side of town and 8:09 on the other becomes a trail.
Reporting has described exactly this capability at national scale — a system that can track nearly every car in America through its network of fixed readers.
One exception: drones
Flock's "Alpha" drone product is a different story — it's a moving camera marketed as reading plates from 2,000 feet. That's genuinely mobile surveillance. For the fixed pole cameras most people encounter, "follow" isn't the right word — "connected" is.