A recording medium device comprising: a tamper-resistant controller (601, 602g); and a storage unit (602, 601g) storing a content and usage condition information indicating a condition for use of the content by a user, the usage condition information being associated with the content; wherein the controller (601, 602g) includes: an acquisition unit configured to acquire an acquisition request related to the content from an apparatus into which the recording medium device is loaded and to acquire an apparatus identifier identifying the apparatus; a judgment unit; and a control unit; characterized in that the storage unit (602, 601g) further stores an individual revocation list including individual revocation information (142, 143) associated with the content, wherein the individual revocation information (142, 143) includes a revocation identifier (152, 153) identifying a revoked apparatus; the usage condition information includes entry information indicating a storage position of the individual revocation information (142, 143) in the individual revocation list; the judgment unit is configured to read, from the storage position indicated by the entry information, the individual revocation information (142, 143) associated with the content to which the acquisition request is related, and to judge whether a revocation identifier (152, 153) that matches the acquired apparatus identifier is present in the individual revocation information (142, 143); and the control unit is configured to prohibit output of the content to the apparatus when the judgment unit judges that the revocation identifier (152, 153) that matches the acquired apparatus identifier is present. a tamper-resistant controller (601, 602g); and a storage unit (602, 601g) storing a content and usage condition information indicating a condition for use of the content by a user, the usage condition information being associated with the content; wherein the controller (601, 602g) includes: an acquisition unit configured to acquire an acquisition request related to the content from an apparatus into which the recording medium device is loaded and to acquire an apparatus identifier identifying the apparatus; a judgment unit; and a control unit; characterized in that the storage unit (602, 601g) further stores an individual revocation list including individual revocation information (142, 143) associated with the content, wherein the individual revocation information (142, 143) includes a revocation identifier (152, 153) identifying a revoked apparatus; the usage condition information includes entry information indicating a storage position of the individual revocation information (142, 143) in the individual revocation list; the judgment unit is configured to read, from the storage position indicated by the entry information, the individual revocation information (142, 143) associated with the content to which the acquisition request is related, and to judge whether a revocation identifier (152, 153) that matches the acquired apparatus identifier is present in the individual revocation information (142, 143); and the control unit is configured to prohibit output of the content to the apparatus when the judgment unit judges that the revocation identifier (152, 153) that matches the acquired apparatus identifier is present. an acquisition unit configured to acquire an acquisition request related to the content from an apparatus into which the recording medium device is loaded and to acquire an apparatus identifier identifying the apparatus; a judgment unit; and a control unit; characterized in that the storage unit (602, 601g) further stores an individual revocation list including individual revocation information (142, 143) associated with the content, wherein the individual revocation information (142, 143) includes a revocation identifier (152, 153) identifying a revoked apparatus; the usage condition information includes entry information indicating a storage position of the individual revocation information (142, 143) in the individual revocation list; the judgment unit is configured to read, from the storage position indicated by the entry information, the individual revocation information (142, 143) associated with the content to which the acquisition request is related, and to judge whether a revocation identifier (152, 153) that matches the acquired apparatus identifier is present in the individual revocation information (142, 143); and the control unit is configured to prohibit output of the content to the apparatus when the judgment unit judges that the revocation identifier (152, 153) that matches the acquired apparatus identifier is present.