ACPR (ATRIUM Car Plate Recognition) works with any smart numberplate recognition camera with a 26-bit Wiegand output. Users registered in the ATRIUM access control system have numberplates assigned to them. When drivers approach a gate or barrier, their numberplate is scanned and checked in the ATRIUM database. If the numberplate is registered to an authorised user, the gate or barrier opens to allow access. ACPR creates a seamless single security environment, with physical access control and parking facilities controlled by the same database. This makes management easier, relieves administrative burdens, and reduces the risk of human error.