Patent ID: 8689356

Claim:
A content data delivery system configured to be able to deliver various data to a handheld device and to make content data available in the handheld device, the handheld device being configured to be connectable to a storage medium that holds a medium identifier and holds content key data used to decrypt encrypted content data, the content data delivery system comprising: a member-registration information database that holds member-registration information including a data pair of a handheld-device identifier related to the handheld device and the medium identifier; a member content-key database that holds a content key data held in the storage medium, a verification portion that verifies the medium identifier held in the storage medium with the member-registration information database; a storage condition determination portion that, when the verification portion determines that the medium identifier corresponds to the member-registration information, determines whether an encrypted content data corresponding to the content key data held in the member content-key database is stored in the storage medium or other storage medium coupled to the storage medium; and a transfer portion that transfers the encrypted content data to the storage medium or the other storage medium depending on an instruction from a user of the storage medium.