A method includes storing first authentication information and second authentication information, the first authentication information being information for a user to access a first information processing device, the second authentication information including third authentication information and forth authentication information, the third authentication information being information for the user to access a second information processing device, and the fourth authentication information being information for the user to access a third information processing device; acquiring first index information from the second information processing device based on the third authentication information; acquiring second index information from the third information processing device based on the fourth authentication information; and generating a list including the first index information with a first indication, and the second index information with a second indication different from the first indication.