California has found dozens of hidden cameras hidden in trailers and construction barrels on border roads around San Diego and Imperial counties, raising concerns with privacy experts, civil liberties advocates, and humanitarian aid workers who believe California should not be supporting the federal government's surveillance and data-collection program. The cameras were installed after California granted permits to the Border Patrol and other federal agencies to install license plate readers on state highways. Supporters argue that they can help law enforcement identify and locate people suspected of serious crimes, and could also help locate missing persons. However, some locals suspect the cameras are behind some unusual encounters with officers from Border Patrol or Customs and Border Protection. The Electronic Frontier Foundation and a coalition of 30 organizations have urged California Gov. Gavin Newsom and the California Department of Transportation to revoke state permits and remove the covert readers from California border highways. The Department of Homeland Security report stated that some readers are capturing license plate numbers, make and model of the vehicle, the state the vehicle is registered in, the type of the camera owner and type, and the date and time of the capture.