Access monitoring device

摘要

The method involves detecting entry of object (O) into a defined surveillance area by a monitoring unit (DE). A detection signal containing a control message is transmitted to a control unit (ST) to determine whether an authorization for admission of the object to the surveillance area is present by authorization and authentication unit (KL). A warning signal is outputted to the control unit via a communication network, if admission of the object to the surveillance area is absent. Independent claims are included for the following: (1) apparatus for detecting unauthorized entry into surveillance area; and (2) lift safety control system.