| 摘要 |
A radio tag system including at least one radio tag (10) that includes a plurality of data areas and a key storage area that stores key information corresponding to at least one data area; and a managing unit (100) that manages access to the radio tag, and that includes a request receiving unit that receives from a user, a request to issue key information that allows access to one of the data areas, and an issuing unit (140) that issues the key information in response to the request received.
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