Method for monitoring an operating state of a device and corresponding device and system

A method for monitoring the operating state of a device, in particular a handling device, including a communication circuit and an antenna for the wireless transmission of signals to and from a base device being arranged on the device, wherein the method comprises the following steps:

• transition of the device between a first operating state and a second operating state, wherein the first operating state corresponds to a position of an interfering object in spaced relation to the antenna and the second operating state corresponds to a position of the interfering object closer in relation to the antenna;
• interference of the signal transmission between the antenna and the base device by the interfering object when it is in its closer position, wherein the interfering object does not interfere with the signal transmission when the interfering object is in its spaced position;
• detection of at least one of the occurrence or lack of interference with the signal transmission for determination of a transition between the operating states.