A parking area access control system includes a first blocking device (6) with a data communication connection to a central control device (2) for opening by a control device command. An identification element (22), with an unambiguous identification key, is arranged on the first blocking device (16). A mobile communication apparatus (20) is connected to the control device for data communication and is configured to read out the identification key from the identification element. The mobile communication apparatus (20) and the control device (2) interact such that the identification key is transmitted from the communication apparatus to the control device and, the control device or the mobile communication apparatus generates a temporary parking key. The control device (2), as a reaction to a request signal (6) sent from the communication apparatus (20) to the control device, opens the first blocking device which is identified by the identification key.