Importance

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Abstract

There is provided a data control system that includes a control server and an information processing terminal equipped with a non-contact type IC chip. The information processing terminal includes a chip memory and a consistency check request portion. The chip memory includes at least one service area that stores a service data item and an index area that stores a link information item for accessing the service area. The consistency check request portion transmits a consistency check request. The control server includes a data acquisition portion that acquires the link information item according to the check request, an area determination portion that determines whether the corresponding service area exists for each link information item, a reading portion that reads the determined service area, and a data update portion that, if the service area could not be read, updates the link information item with information not indicating any access destination.

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First Claim