In a serial bus system data in the form of telegrams, representing process images of control tasks of the active station, are transmitted to the connected passive stations, and the process data are allocated to the process images in the passive station. The device includes an elongated tubular member containing a spring loaded rod which extends through a lower stop on the tubular member to an attachment feature such as a hook. The second web service responds by sending information associated with a second user of the first web service who previously logged into the second web service from the first web service using the protocol.