WIRELESS TAG, COMMODITY, COMMODITY ATTACHMENTS, COMMODITY SET, READER, PRINTER, INFORMATION PROCESSING METHOD AND JUDGING METHOD

摘要

PPROBLEM TO BE SOLVED: To further improve genuineness by preventing forgery of a commodity. PSOLUTION: Data of a wireless tag 304 is read by a reader of the wireless tag, and ciphered, and indicated on a commodity 302 by a printing or the like as data 306. When whether the commodity is genuine or not is checked, any commodity using a symmetrical cipher or processing can be confirmed as genuine, if the data of the wireless tag 304 is read by the reader of the wireless tag and the ciphered data matches to the indicated data 306. When using asymmetrical cipher, if the indicated data 306 is ciphered by a public key and the data matches to the data of the wireless tag 304, the commodity can be regarded as genuine. PCOPYRIGHT: (C)2003,JPO