To provide a technology with which the authority of the user of a lost recording medium is speedily recovered.

The recording medium managing method for managing the recording medium in which various functions are packaged has a step for acquiring function identification information correlated to the recording medium identification information of the lost recording medium from an issue managing table in which the recording medium identification information for identifying the recording medium is correlated to the function identification information for identifying the functions recorded on that recording medium, a step for registering the recording medium identification information for identifying the new recording medium and the acquired function identification information in the issue managing table by correlating both pieces of information, and a step for installing the functions identified by the acquired function identification information onto the new recording medium.