PROBLEM TO BE SOLVED: To provide a multiuser information processing system that facilitates a log-in operation through a terminal device.SOLUTION: A multiuser information processing system has a server device having table data (TA) for associating each of plural registered users (HU[1] to HU[6]) with any one of plural time zones and a log-in controller, and plural terminal devices. When some registered user logs in the server device through some target terminal device, the log-in controller transmits a log-in list containing personal specific information of one or more registered users to the target terminal device on the basis of the present time and the table data to display the log-in list on the display screen of the target terminal device. A signal which specifies any personal specific information in the log-in list and is based on an input operation to the target terminal device is received from the target terminal device, whereby a registered user who makes log-in through the target terminal device is identified, and associates the user with the target terminal device.SELECTED DRAWING: Figure 6
