VALUABLE MEDIUM MONITORING SYSTEM, VALUABLE MEDIUM MONITORING METHOD, SERVER, AND TERMINAL DEVICE

摘要

To provide a valuable medium monitoring system, a valuable medium monitoring method, a server, and terminal devices, which can simply and efficiently detect a medium ineligible for circulation while suppressing system load.SOLUTION: A valuable medium monitoring system comprises a plurality of terminal devices and a server. Each of the terminal devices includes: extraction means for extracting information on a valuable medium; determination means for determining whether or not the valuable medium is ineligible for circulation on the basis of the extracted information on the valuable medium; and transmission means for transmitting information on the medium ineligible for circulation to the server when it is determined that the valuable medium is ineligible for circulation. The server includes: a storage section for storing information on a plurality of media ineligible for circulation, grouped into a plurality of groups; and transmission means for transmitting information on media ineligible for circulation in a specific group corresponding to the medium ineligible for circulation to another terminal device that satisfies a predetermined condition when the information on the medium ineligible for circulation has been transmitted from the terminal device.SELECTED DRAWING: Figure 2