NTAG 424 DNA vs NTAG213 / 215 / 216

Choose NTAG 424 DNA if your application requires cryptographic security and authentication features. This chip provides AES-128 encryption with mutual authentication, Secure Unique NFC (SUN) message authentication, encrypted file access, and originality signatures. It operates as an ISO/IEC 14443-A Type 4 / NFC Forum Type 4 Tag at 13.56 MHz with 416 bytes of user memory. The SUN feature enables secure dynamic URL generation for anti-counterfeiting and brand protection, making it suitable for pharmaceutical authentication, luxury goods verification, secure access control, and connected product authentication where tampering or cloning must be prevented. The Type 4 Tag architecture supports more complex file structures and provides stronger security primitives than Type 2 tags. Choose NTAG 213 / 215 / 216 if you need cost-effective NFC tags for applications without cryptographic security requirements. These chips operate as ISO/IEC 14443 Type A / NFC Forum Type 2 Tag compliant devices at 13.56 MHz, offering three memory configurations: NTAG213 with 144 bytes user memory, NTAG215 with 504 bytes user memory, and NTAG216 with 888 bytes user memory. Security is limited to ECC-based originality signature, 32-bit password protection, field-programmable read-only locking, and a 7-byte unique UID. These features provide basic clone detection and write protection but lack the cryptographic authentication of the 424 DNA. The NTAG 21x family is ideal for marketing campaigns, smart posters, product information tags, loyalty cards, and consumer engagement applications where the primary concern is cost per unit rather than anti-counterfeiting protection. The simpler Type 2 architecture results in lower manufacturing costs and broader compatibility with basic NFC readers.