what does anpr check
How it works. As a vehicle passes an ANPR camera, its registration number is read and instantly checked against database records of vehicles of interest. Police officers can intercept and stop a vehicle, check it for evidence and, where necessary, make arrests.etention and access to stored data. At present around 7750 ANPR cameras nationally, submit between 25 and 30 million ANPR âreadâ records to the National ANPR Data Centre (NADC) daily. ANPR data from each police force is stored together with similar data from other forces for a period of two years.