| 摘要 |
<p> The present invention stores a user ID that is identification information about a pre-registered user and acquired benefit information that is benefit information imparted to the user ID in correlation with each other, and classifies, into a group, the user ID, among the registered user IDs, for which grouping is requested. Furthermore, when the usage, by a user corresponding to one of the user IDs belonging to the classified group, of a service for which a benefit is to be granted to a preregistered group is determined to have satisfied a preset benefit granting condition, benefit information is imparted to the acquired benefit information corresponding to the user ID of the user corresponding to the determination result, and benefit information is also imparted to the acquired benefit information corresponding to other user IDs in the group to which the user ID belongs.</p> |
