Patent ID: 7275687

Claim:
A service providing system, comprising: entrance detecting means for inputting a ticket identifier assigned to a ticket of a user having entered a predetermined area and for transmitting a ticket identifier therefrom; exit detecting means for inputting a ticket identifier of the user who is exiting the predetermined area and for transmitting the ticket identifier therefrom; identifier control means including identifier storage means for receiving the ticket identifier transmitted from the entrance detecting means and registering a validity of the ticket identifier to the identifier storage means, and for receiving the ticket identifier transmitted from the exit detecting means and erasing a validity of the ticket identifier from the identifier storage means; request receiving means for receiving, from a user's unit having stored a ticket identifier and a user's unit identifier and at any user-selected timing, an identifier set of the ticket identifier and the user's unit identifier and a contents request, the user's unit being associated with the user respectively having a ticket whose identifier has been registered in the identifier storage means; identifier collating means for making a check in response to the contents request thus received at the request receiving means, to determine whether or not an identifier set matching the identifier set thus received exists in the identifier storage means, and outputting a result of the check; and contents delivery means for delivering, if the result of check is positive, predetermined digital contents or digital contents desired by the user and identified by the contents request to the user's unit, the delivering being operable only within the predetermined area.