To solve a problem that, since commercial dealing using a network is diversified, in configuring dealing system for computerizing gifts dealing, dealing between a user given a gift and a provider giving commodity requires the improvement in security for the provider such as certainty of a user's authentication that the user is a right user to be given a gift, and further it is necessary to improve the convenience so that the user given the gift does not feel troublesome in using the system, whereby the dealing system can be spread.

A card information device is used for a dummy gift, and according to the authentication data stored by the card information device, authentication of the user and specification of a browsing destination of browsed information are automatically performed.