When a communication unit receives a connection request from a device, a selection screen generating unit provides a selection screen for selecting a registered user. A login user storage unit separately stores information identifying a primary user who logged in first and information identifying one or more secondary users who logged in second or thereafter. Specifically, the login user storage unit stores the information identifying the primary user in association with information indicating initial login. An application startup unit starts an application upon receipt of a start instruction from the device used by the primary user but does not start the application when given the start instruction from the device used by the secondary user.