Automated registration number plate READERS CAN DO. >> Reporter: CAN CAMERAS MOUPTED ON A POLICE CRUISER. >> WE’RE looking AT A LICENSE PLATE instantly throughout THE avenue. >> law enforcement officials IN SAN LEANDRO, CALIFORNIA, CAN capture AND report LICENSE PLATES AS THEY force DOWN ANY avenue. AN efficient MOLEST TO trap automobile THIEVES OR PULL OVER cars THAT exhibit UP IN A crook DATABASE. >> WITH technological know-how AND excellent, shrewd POLICING, IT allows for US TO preserve OUR PUBLIC safety. >> WHEN A regional ACTIVIST TO PETITION THE POLICE division, HE SAYS HE was once stunned by using WHAT HE noticed. >> DID YOU believe IT used to be A CASE OF huge BROTHER’S long past TOO far? >> sure, I DO consider THAT. I’ve no longer BEEN CHARGED WITH, now not SUSPECTED OF COMMITTING ANY CRIME. >> Reporter: HE discovered WHAT HE SAYS IS AN EGREGIOUS VIOLATION OF privateness, the place POLICE simply occur TO GET photographs OF HIS automobile AND more. >> SO THIS image suggests MY car PARKED within the DRIVEWAY OF MY residence, VERY obviously indicates MY DAUGHTERS AND MYSELF GETTING OUT OF. >> Reporter: THE SCANNER IS invariably ON.ANY TIME A police officers DRIVES THE auto, it is RECORDING, reports LICENSE PLATES ON THE SERVERS. IN just a few MINUTES. POLICE SAY the info CAN LATER BE ACCESSED TO clear up CRIMES. However HE SAYS A LINE HAS certainly BEEN CROSSED. >> harmless persons will have to no longer HAVE THEIR records BEING stored through regulation ENFORCEMENT. >> Reporter: law ENFORCEMENT HAS WHOLEHEARTEDLY EMBRACED THIS science. More than a 3rd ARE utilizing automated PLATE READERS, in step with A study with the aid of GEORGE MASON tuition. THREE CAMERAS ON THE car. THEY seize PLATES right away, go-CHECKED FOR cars, SO IF A auto COMES throughout AS BEING STOLEN, THE OFFICER will be instantly ALERTED. It is now not THAT data collection IS bad, CRITICS SAY, however THAT DEPARTMENTS hold THE understanding ON FILE, frequently FOR MONTHS motion frequently FOR YEARS. Every department HAS ITS possess coverage. SAN LEE ANDO continues IT FOR A year IRS once they have THE location OF YOUR PLATE AND where YOU have been ON THAT DATE AND TIME, THAT THEY SCANNED YOUR PLATE, they are able to SEE where you work, WHO YOU associate WITH, where YOU PRAY, where you’re GOING TO THE physician, AND they can gain knowledge of rather rather a lot ABOUT YOU. >> as a way to HAVE A dialogue ABOUT something LIKE THIS, folks need to comprehend WHAT’S taking place. >> Reporter: POLICE inform US THE technology IS best BEEN professional in opposition to CRIME SUSPECTS, however SOME SAY THERE desires TO BE more TRANSPARENCY and limits TO WHAT know-how may also be GATHERED AND saved ON citizens.