These automatic Numberplate Recognition Cameras (ANPR) feature onboard processing which uses an optical character recognition (OCR) engine for recognising the vehicle number plate. For vehicle access control applications, a database can be created on the camera storing authorised number plates.  This process is managed through the EvTrack interface effectively making the camera an access control reader. Once the LPR camera recognises an authorised vehicle number plate it activates a relay output to open the gate and the vehicle is granted access into the site.