NON-CONTACT COMMUNICATION SYSTEM, READER-WRITER, NON- CONTACT IC CARD/TAG

摘要

PROBLEM TO BE SOLVED: To provide a non-contact communication system shortening time required for recognition of individual ID of each tag in communication between a reader-writer and an IC card/tag.

SOLUTION: When authentication is carried out by sending a transmission command to the non-contact IC card/tag from the reader-writer between a plurality of the non-contact IC cards/tags existing in a communicable area and each having an individual ID and the reader-writer processing the non- contact IC cards/tags by non-contact communication, the authentication of the individual IDs of the non-contact IC cards/tags is carried out by using an optional bit.

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