The system includes a first receiver that, when information has been printed on the medium using a printing apparatus, receives, from the printing apparatus, an electronic tag ID of an electronic tag in the printed medium and a plurality of recipient IDs specified by a user, a second receiver that, when the printed medium has been stored in a repository, receives, from the repository, an electronic tag ID of an electronic tag in the stored medium and an ID in association with the repository (hereinafter called the repository ID), and an associating unit that, when the electronic tag ID sent from the printing apparatus agrees with the electronic tag ID sent from the repository, associates a recipient ID corresponding to the repository ID sent from the repository, out of the plurality of recipient IDs sent from the printing apparatus, with the agreed electronic tag ID.