NFC Forum Type 4

NFC Forum Type 4 tags operate at the ISO 14443-4 transmission protocol layer, supporting APDU commands (ISO 7816-4) and data rates up to 424 kbps. Type 4 tags provide the highest security capabilities, including AES-128/256 encryption, mutual authentication, and secure file system access control. Major implementations include NXP MIFARE DESFire and NTAG 424 DNA. Type 4 is the standard for payment cards, secure credentials, and anti-counterfeiting applications.