From Trump campaign signs to Planned Parenthood bumper stickers, license plate readers around the US are creating searchable databases that reveal Americans’ political leanings and more.

New automated license plate readers have appeared in Ballston. Multiple readers have contacted ARLnow in recent days about new tech installed on traffic signal poles along Fairfax Drive, at the intersections with N.

There are already 24 license plate readers installed in the San Fernando Valley, and the LAPD is hoping to have 100 up and running by the end of the year.

The ALPR cameras assist law enforcement in tracking and recording license plates as they pass through, to narrow the search for vehicles tied to crimes.

City leaders, along with law enforcement officials gathered to announce the launch of a program that will install 100 license plate reading cameras in the San Fernando Valley that authorities believe will help police track criminals down.

The license plate readers are being installed at various strategic locations in the northwestern part of the San Fernando Valley.

The cameras will be at or near intersections in Chatsworth, Northridge, Granada Hills, Sherwood Forest, Porter Ranch, West Hills and North Hills.

Councilman John Lee Lee says that since the effort began to install 100 readers in his district, they have already helped solve a pair of robberies.

Lee says his district is turning to technology to keep residents safe with 100 automated license plate readers going up in the San Fernando Valley, as there is a shortage of Los Angeles Police Department officers.

The City Commission approved Fargo police to continue using their "Flock" cameras and license plate readers that have been on a trial basis at select intersections since June.