System, method and computer program for an access control system

A system (300) for controlling access to a restricted area being a vehicular parking area is described. The system (300) includes: a communication system (306); and a mobile communication device (310) associated with an entity, wherein the user is associated with a vehicle for parking within the restricted area, wherein the mobile communication device (310) is configured to: receive one or more entry signals from the communication system (306) when the entity approaches an entry point of a restricted area; based at least partially on a received signal strength of the one or more entry signals, generate and transfer, to the communication system (306), an entry request; receive, from the communication system (306), authorisation data indicative of the entity being granted access to enter the restricted area; receive one or more exit signals from the communication system (306) when the entity approaches an exit point of the restricted area; and based at least partially on a received signal strength of the one or more exit signals, generate and transfer, to the communication system (306) an exit request indicative of the authorisation data in order to exit the restricted area.