National parks are supposed to be a place to unplug — not a place where the federal government tracks your car.

But the National Park Service has quietly installed automatic license plate reader cameras made by a company called Flock at parks including Yosemite and Golden Gate National Recreation Area, with plans to add more.

These cameras record every plate that passes, along with the vehicle's color, make, and model, and log exactly where and when it was seen. That data becomes part of a nationwide database that police can search, often without a warrant. Park rangers are raising the alarm. One current ranger said, "Every American should be free to visit national parks without their location traced by the federal government," according to 404 Media. Another worried a misread plate could get an innocent visitor pulled over at gunpoint.

The National Park Service says the cameras are only for traffic and wait times, and claims they have no ties to police records or state driver databases. But the technology is built for exactly that kind of sharing.

National parks belong to everyone. Sign the petition to demand the National Park Service remove Flock cameras from national parks now — before this quiet expansion becomes permanent.