How do I differentiate between counterfeited goods and real ones?

[ivannagara]

Hello there!
I wanted to ask, how do you differentiate between counterfeited product and the real product? I am now using the ST25TV02KC tag (NFC type5 - ISO/IEC 15693) and I wanted to know if there might be someone out there that can clone the UID and manufacturer ID of the tag, so that I then cannot differentiate between the real and the counterfeited product?
Thank you before!

[Thomas Q. · Accepted solution]

Hello,
The ST25TV02KC tag supports a digital signature feature that may help fulfill your applicative requirements.
This feature is detailed in application note AN5580 "TruST25 digital signature feature for ST25TV512C and ST25TV02KC devices". You can get this document by asking your local STMicroelectronics sales contact.

Best regards,
Thomas