License Plate Readers

The San Mateo Police Department has patrol vehicles, mounted cameras, and mobile trailers equipped with automated license plate readers (ALPRs) to better safeguard our community, helping to not only locate stolen vehicles and missing persons, but also wanted violent felons. ALPR devices have also proven time and again to identify crime trends and provide precise, investigation-specific information to help solve crime.

The system does not retain private vehicle registrant information of any kind. Our ALPRs collect publicly visible license plate character data, time/date/location points, and an image of the vehicle. This information is no different than the information viewed and/or collected by a conscientious patrol officer – just faster, more accurately, and in greater volume. We recognize that your privacy is important to you - and THAT is important to US! Data from our ALPR system, like those from the other agencies in our County and much of the Bay Area, is uploaded and retained by third party vendors.  

ALPR Patrol Car


San Mateo Police Department maintains a policy on ALPRs that meets statutory requirements. Lexipol Policy 463 covers ALPRs and can be found within the publicly available policy manual.