BigPatents India

An information recording method has; a history determination step for determining whether or not a medium being cased and capable of being used for information recording and reproduction has previously been taken out from the case by using an identification section having historical information as to whether the medium has previously been taken out from the case or not; and a verification step for verifying correctness of information recorded always or on condition that a predetermined condition is satisfied when a result of the determination shows that the medium has previously been taken out from the case.