 the second access permission information stored in the access permission information storage part. Thus, the security provided for information of the first information storage device can be improved. The first access permission information may comprise write permission information for permitting the first information storage device to write information to the first removable recording medium. According to the invention, since write access to the first removable recording medium can be restricted based on the write permission information, it is possible to prevent information from being taken away after having been recorded on the first removable recording medium. Thus, the security provided for information of the first information storage device can be further improved. The first access permission information may comprise read permission information for permitting the first information storage device to read information from the first removable recording medium. According to the invention, since read access to the first removable recording medium can be restricted based on the read permission information, it is possible to prevent information from being easily read out from the first removable recording medium. Thus, the security provided for information of the first information storage device can be further improved. The access controller may permit the first information storage device to write information to the first removable recording medium when the write permission information is valid. According to the invention, security against write access to the first removable recording medium can be easily changed based on the 