| 摘要 |
In an authenticating device, a registered-insertion-count registering processor counts the number of a registered insertion count and causes the registered insertion count to be stored in an integrated circuit (IC) card. At the time of a user authentication, an authenticating-insertion-count registering processor counts an authenticating insertion count (the number of insertion-and-removal) of the IC card and stores the counted authenticating insertion count in a storage unit. Based on the authenticating insertion count stored in authenticating insertion-count data and the registered insertion count stored in registered insertion-count data which is retrieved from the IC card, an authenticating processor executes an authentication of a user.
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