An operating apparatus stores user information including authentication information of users permitted to use a process-carrying-out apparatus; acquires authentication information of a user of the process-carrying-out apparatus; in response, returns a state of the process-carrying-out apparatus from a power saving state into a normal state to carry out a process; carries out authentication of the user based on the authentication information of the user and the stored user information; if the authentication is not successful, requests the process-carrying-out apparatus to carry out authentication the user; if any authentication is successful, permits the use of the process-carrying-out apparatus; and, if the use of the process-carrying-out apparatus is permitted, stores the authentication information of the permitted user.
