Your Devices Are Talking: The Next Generation of License Plate Readers

Our Take

Patrick McGeehan brings a perspective most ALPR critics don't have: decades on the other side of the investigation, first as a homicide detective and now as a defense attorney. When someone with that background says the next generation of plate readers should worry you, it's worth listening. His video breaks down how systems reportedly like SignalTrace aim to go beyond snapping your plate — they're designed to pair that plate with the wireless identifiers broadcasting from phones and devices inside your car, stitching together a far more invasive picture of who's riding with you and where you've been.

This is exactly the mission creep we've been tracking. ALPR networks were sold to city councils as tools to find stolen cars and Amber Alert vehicles. Quietly, the capability has expanded toward device fingerprinting, long-term location histories, and data sharing across agencies with little public debate or judicial oversight. McGeehan's point about constitutional questions isn't academic — courts are still catching up to what warrantless, persistent surveillance of this kind means for the Fourth Amendment, and law enforcement isn't waiting around for an answer before deploying it.

Credit to McGeehan for translating investigative tech into plain language the public can actually use. If this kind of surveillance creep concerns you, check our camera map to see what's already watching your routes, and visit our take-action page to push back at the local level before these systems become permanent infrastructure.