On RFID system, the information stored in the tag or card can be read or rewritten by way of using the radio communication with the reader/writer.
After RFID with UHF band emerged, more attention to use it for tracking information of “thing”, and the countermeasures for privacy such as purchase history are implemented. However, information on the tag can be unintentionally read or rewritten that emerges as security risks.
In order to protect privacy and eliminate security risks, RFID with added functions, a locking function to disable rewriting information, a KILL function to disable all the reading and writing, and further more an encrypted authentication function, are available.
Therefore, there is the risk that those information data will be stolen or rewritten without knowing it.
Furthermore, the abuse of the information data in card or tag may be made by altering the original information and writing the incorrect information.
For the purpose of protecting the above risk, the specific RFID products with the strong security function are existing on the market.
Specifically, by putting the authentication function on the tag and card by utilizing the encryption technology etc and making the mutual authentication process at the time of reading or rewriting the information data, “Stealing the information data” or “Impersonation” is suppressed.
Recently, the system allows to read information only by the specified reader/writer, and the newer technology, which is the dual authentication using a combination of block chain or NFT and RFID, to guarantee the authenticity.
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