NTAG 424 DNA NFC Blank Card | AES-128 SUN Encryption | 85.5x54mm

Advanced Cryptographic Security with AES-128 This smart card utilizes AES-128 encryption to generate a Secure Unique NFC (SUN) message upon every tap. Unlike standard static NFC tags that can be easily cloned, the NTAG 424 DNA chip dynamically generates a unique, encrypted authentication code (CMAC) appended to the NDEF URL. When tapped by an NFC-enabled mobile device, the backend server verifies this dynamic code in real-time, making it impossible for counterfeiters to copy or replay the tag's data. Standardized NFC Forum Type 4 Compliance The NTAG 424 DNA chip is fully compliant with ISO/IEC 14443-4 and ISO/IEC 7816-4 standards, ensuring maximum interoperability with existing NFC infrastructure. It features a file-based storage structure with a total capacity of 416 bytes, which is formatted according to NFC Forum Type 4 specifications. With a reading distance of up to 10cm, it provides a seamless and responsive user experience for access control and product identification. Privacy Protection and Random ID Support To protect user privacy and prevent unauthorized tracking, this chip supports Random ID and encrypted UID/data mirroring within the NDEF file. It features five customer-defined AES keys that enable advanced cryptographic functions, including mutual authentication between the secure host/reader and the card. This ensures that sensitive NDEF files and extra data files remain strictly protected against unauthorized access. Technician Tip When programming the SUN feature, ensure your backend server is properly configured to decrypt and authenticate the dynamic AES-128 CMAC appended to the URL. Because the authentication mechanism relies on standard NDEF URLs, end-users can verify the card's authenticity using native NFC reading capabilities on Android and iOS 11+ devices—no custom application is required. The standard CR80 size (85.5x54mm) PVC surface is fully compatible with thermal ID card printers, allowing you to print custom employee badges or brand designs easily.