Abstract:
The invention concerns a method, access control device (14; 30) and computer program product for providing user access to a piece of electronic equipment (30) in a computerized process control system (10) as well as to such a computerized process control system (10). In the system (10) an access control device (14; 30) receives, from a portable wireless communication device (34), a first identifier associated with this portable wireless communication device, compares the received first identifier with identifiers allowed for use in accessing the piece of equipment (30), and grants, in case the first identifier is found among the identifiers allowed for such use, the user of the portable wireless communication device (34) access to the piece of electronic equipment (30).