Patent ID: 8151367

Claim:
An information processing system comprising: an information recording medium encoded with a program containing a determining part and a usage request signal generating part executable by a computer, the determining part, when executed by the computer, determining whether a usage allowing signal is true or false, and the usage request signal generating part, when executed by the computer, generating a usage request signal that is unique to the information recording medium; the computer configured to execute the determining part and the usage request signal generating part of the program of the information recording medium; and a management apparatus that includes: a transmission preventing processing part configured to prevent transmission of the usage allowing signal that allows usage of the information recording medium, in response to receiving a usage preventing instruction for the information recording medium; and a usage allowing signal generating processing part configured to generate the usage allowing signal that is unique to the information recording medium in response to receiving the usage request signal, wherein a storage area of the information recording medium is divided into a first divided storage area for which usage is prevented and is allowed by the usage allowing signal and a second divided storage area for which usage is not prevented, wherein the computer is further configured to deactivate preventing usage of the information recording medium when the computer is not connected to a communication network.