ELEVATOR SYSTEM AND METHOD OF AUTHENTICATING A COMPUTING DEVICE TO A SAFETY CONTROLLER OF AN ELEVATOR SYSTEM

An elevator system includes a gateway device (60) and a safety controller (52) arranged to monitor at least one safety condition of the elevator system. The gateway device (60) is configured to enable a computing device (64) to establish a connection with the gateway device (60). The safety controller (52) is configured to:receive first authentication information (600) from the gateway device (60), wherein the first authentication information (600) is gateway authentication information (600);check whether the gateway authentication information (600) meets a first authentication condition;if the gateway authentication information (600) meets the first authentication condition, receive from the computing device (64), via the gateway device (60), second authentication information (640);check whether the second authentication information (640) meets a second authentication condition; andif the second authentication information (640) meets the second authentication condition, authenticate the computing device (64), wherein the authenticated computing device (64) is granted maintenance access to the safety controller (52) including permission to control and/or modify an operation of the safety controller (52).