Cryptographic Security in an NFC Tag
NTAG424 DNA is NXP's most advanced NFC tag for security-critical applications. It features AES-128 encryption, Secure Unique NFC Message (SUN) authentication, and a 256-byte user memory — enabling genuinely tamper-evident, anti-counterfeit NFC deployments that cannot be cloned with a standard NFC app.
Each tap generates a cryptographically unique message that can be verified server-side, making NTAG424 DNA the right choice for brand protection, pharmaceutical authentication, high-value product tagging, and any application where you need to prove a physical item is genuine. This is not a tag for general-purpose URL linking — it is purpose-built for secure, enterprise-grade NFC.
- AES-128 symmetric encryption, ISO/IEC 7816-4 compliant
- SUN authentication — unique cryptographic output per tap
- 256 bytes user memory across three independent files
- Anti-clone, anti-counterfeit by design
- Ideal for brand protection, pharma, and secure access
- Requires backend server integration for full security feature use