In 2025, NXP Semiconductors, a global leader in secure connectivity solutions, officially launched its latest innovation: the NTAG® X DNA – a next-generation secure NFC chip. Building on the NTAG® product legacy, this new release offers advanced security, better connectivity, and improved cryptographic performance. It marks a significant leap in secure IoT authentication technology.
With growing demand for hardware security in smart homes, medical supplies, and industry, NTAG® X DNA arrives timely. It offers on-chip ECC key generation, PKI certificate management, AES-256 encryption, and dual NFC plus I²C interfaces. This chip supports many use cases throughout the entire device lifecycle.
Compared to the widely adopted NTAG® 424 DNA, NTAG® X DNA represents a comprehensive upgrade — from a higher security certification level (Common Criteria EAL4 → EAL6+), to stronger cryptographic capabilities, more flexible hardware interfaces, and broader support for device-to-cloud authentication.
This article compares NTAG® X DNA with its predecessor, NTAG® 424 DNA. It highlights the new features and improvements. It explains why NTAG® X DNA will be key for future secure, connected devices.
Key Differences at a Glance: A Quick Comparison of NTAG® X DNA vs. NTAG® 424 DNA
Looking to quickly understand how NTAG® X DNA improves over its predecessor? The table below shows key technical and functional differences between NTAG® X DNA and NTAG® 424 DNA TT. It covers security certifications, encryption support, and application areas.
NTAG® X DNA vs. NTAG® 424 DNA – Feature Comparison Table
| Feature / Parameter | NTAG® 424 DNA TT | NTAG® X DNA |
| Security Certification | Common Criteria EAL4 | Common Criteria EAL6+ with AVA_VAN.5 (Higher Level) |
| Cryptographic Support | AES-128 + SUN + LRP | AES-128/256, ECDSA, ECDH, HMAC, SHA, HKDF for advanced cryptography |
| Asymmetric Cryptography | ❌ Not Supported | ✅ Supported – ECC 256-bit (NIST P-256 / brainpoolP256r1) |
| Supported Protocols | ISO/IEC 14443, ISO 7816-4 | Same as 424 DNA plus hot-swappable I²C interface |
| Interface Options | NFC only (ISO 14443 Type 4) | Dual interface: NFC + I²C with 2 configurable GPIOs |
| Special Features | SUN message, tamper detection | On-chip ECC key generation, silent mode, dual-interface flexibility |
| Target Applications | Brand protection, user engagement, tamper alerts | IoT device authentication, cloud integration, digital product passports |
Security Enhancements: A Major Leap from EAL4 to EAL6+
NXP’s latest release, the NTAG® X DNA, marks a significant advancement in security by achieving the Common Criteria EAL6+ certification. This higher security level allows the chip to resist more advanced physical and non-invasive attacks, significantly improving overall system protection.
Key Security Features:
- On-Chip ECC Private Key Generation
The NTAG® X DNA generates elliptic curve cryptography (ECC) private keys internally, ensuring these keys never leave the chip. This dramatically improves key management security and is especially suited for public key infrastructure (PKI) environments. - Support for Advanced Cryptographic Algorithms
Beyond AES-256, the chip supports ECDSA (digital signatures), HMAC (message authentication), SHA-384 (secure hashing), and HKDF (key derivation), providing a robust foundation for complex security protocols like TLS 1.3 and Matter. - Compared to NTAG® 424 DNA
The existing NTAG® 424 DNA only supports AES-128 encryption and basic Secure Unique NFC (SUN) messaging. NTAG® X DNA represents a comprehensive upgrade in both encryption strength and algorithm versatility.
This upgrade in certification and cryptographic features ensures stronger protection for IoT, industrial, medical, and other high-security applications.
Enhanced Functionality and Flexibility: From Consumer Tags to Industrial and Medical-Grade Chips
The NTAG® X DNA offers major upgrades in features and flexibility, moving beyond standard NFC tags into industrial and medical use.
Key Feature Highlights:
- Dual Interface Design (NFC + I²C)
Supports both Near Field Communication (NFC) and I²C interfaces, with hot-swappable capability during operation. This greatly enhances communication flexibility between devices and cloud platforms, addressing complex IoT requirements. - GPIO Support and Batteryless Power Capability
Equipped with two configurable GPIOs, one of which can be used for power downstream with up to 10mW output—ideal for power management in low-power or batteryless devices. - Silent Mode Configuration
Allows sensitive data to be hidden without interfering with the standard ISO 14443 NFC protocol, enhancing privacy and data security. - High-Speed Data Transmission
Supports ultra-high Very High Bit Rate (VHBR) speeds up to 3.4 Mbit/s, significantly boosting data transfer efficiency for applications demanding faster communication.
NTAG® X DNA goes beyond brand protection and engagement, enabling secure authentication and communication in IoT, healthcare, and industrial automation.
Enhanced Development and Integration Convenience
The NTAG® X DNA significantly improves developer friendliness and integration flexibility, helping accelerate product development and time-to-market.
Key Benefits:
- Standard Crypto API Support
Developers can easily leverage familiar cryptographic interfaces to implement complex AES and ECC functions, reducing development complexity and boosting efficiency. - Compatibility with Leading Security Protocols
ECC supports both NIST P-256 and Brainpool curves, ensuring seamless compatibility with major security protocols like TLS 1.3 and Matter, addressing diverse security needs. - Flexible Certificate Provisioning
Certificates can be provisioned either at NXP’s factory or on-site, offering high deployment flexibility and catering to customized application requirements.
NTAG® X DNA offers faster, safer integration, making it ideal for enterprises upgrading smart device security efficiently and securely.
Expanded Use Cases: From Brand Protection to Digital Passports
Typical Applications of NTAG® X DNA:
- Medical Consumables Authentication
Provides hardware-level security to ensure the authenticity and tamper-proof usage records of medical consumables, enhancing patient safety and regulatory compliance. - Battery Digital Passport
Stores comprehensive battery lifecycle data—from manufacturing to usage, maintenance, and recycling—enabling smarter battery management and compliance tracking. - Industrial IoT Device Authentication
Supports PKI-based strong device-to-device authentication, securing communications within industrial automation systems and preventing unauthorized access. - Device-to-Cloud Registration and Authentication
Uses on-chip keys and certificates to enable secure authentication and encrypted data exchange between devices and cloud platforms, ensuring trusted IoT endpoint connectivity and management.
Typical Applications of NTAG® 424 DNA:
- NFC Interactive Marketing and Brand Protection
Leverages unique Secure Unique NFC (SUN) dynamic messages to prevent counterfeiting and enhance consumer engagement through mobile interactions. - Tamper Detection and User Behavior Tracking
Features built-in tamper status detection to guarantee product integrity and collect user interaction data for improved after-sales services. - Secure Content Access (Encrypted NDEF)
Protects sensitive data stored on the tag by ensuring only authorized devices or users can access encrypted content, strengthening privacy protection.
Recommendations for Selection and Use
When to Choose NTAG® X DNA:
- High Security Requirements
Ideal for applications in medical devices, industrial automation, and smart battery management where robust protection against advanced physical and side-channel attacks is essential to safeguard critical data and operations. - Asymmetric Encryption & Cloud Authentication
Supports ECC-based asymmetric cryptography for strong authentication and encrypted communication, enabling secure device-to-cloud identity verification and data exchange—perfect for modern IoT device remote management. - Multi-Interface & Control Signal Support
Features dual interfaces—NFC and I²C—with seamless interface switching, offering flexible integration across diverse hardware environments. Built-in GPIO pins enable control signal output, suitable for battery-less devices and complex communication scenarios. - Compatibility with Complex Protocols and Applications
Compatible with mainstream security protocols like TLS 1.3 and Matter, and supports advanced cryptographic primitives, allowing developers to quickly integrate and elevate overall system security.
When to Choose NTAG® 424 DNA:
Brand Protection & Consumer Engagement
Perfect for consumer goods markets that require product anti-counterfeiting and interactive marketing. Utilizes dynamic Secure Unique NFC (SUN) messages to enhance user experience and product security during NFC scans.
Tamper Detection & Status Tracking
Equipped with tamper detection features that immediately log and report product openings, ensuring product integrity and building user trust.
Cost-Sensitive, High-Volume Projects
Excels in large-scale NFC tag deployments where security needs are moderate but cost control is critical, making it a great fit for retail and consumer electronics applications.
Basic Encryption & Access Control
Supports AES-128 encryption and flexible access rights management, meeting security and privacy needs for most standard applications.
Conclusion: NTAG® X DNA — A New Paradigm for IoT Security
NTAG® X DNA represents a significant evolution from traditional NFC tags to secure microcontrollers. It combines high-level security certification with advanced cryptographic capabilities, ushering NFC technology into a new era of robust security. This shift lays a stronger foundation for safeguarding IoT devices and smart products.
Looking ahead, NTAG® X DNA uses advanced encryption and flexible authentication to meet rising IoT security needs. It protects data privacy and integrity across a device’s lifecycle, making it ideal for smart manufacturing, healthcare, and industrial automation.
As a leader in secure NFC chip technology, NXP continues to drive innovation through its NTAG® product family. The launch of NTAG® X DNA strengthens NXP’s leadership in high-security NFC. It equips smart devices with improved security and dependable connectivity.
FAQs
How do the power consumption levels of NTAG® X DNA and NTAG® 424 DNA compare?
The NTAG® X DNA uses only 5 microamps in Halt mode, ideal for battery-sensitive IoT devices. The NTAG® 424 DNA also supports low power but is more tuned for consumer-focused use cases, with slightly different specs.
How does the dual-interface design of NTAG® X DNA enable flexible switching?
NTAG® X DNA supports both NFC (ISO 14443) and I²C interfaces and allows switching between these communication modes without needing to reboot the chip. This flexibility makes it easier to integrate diverse use cases, from device-to-device communication to cloud connectivity.
How does NTAG® 424 DNA implement tamper detection?
NTAG® 424 DNA features built-in tamper detection using an irreversible status register that logs if a product has been opened. This status is securely embedded in the NDEF message, allowing users to instantly verify product integrity by scanning the tag with any NFC-enabled device, which greatly enhances anti-counterfeiting protection.
Recommended Products
NXP NTAG® 424 DNA NFC Type 4 Card | ISO14443-A CR80
Unlock advanced security with our NTAG® 424 DNA CR80 RFID Card. Compliant with ISO/IEC14443 Type-A and NFC Forum Type 4, it features AES-128 encryption and SUN authentication for secure NFC messaging. Compatible with Android and iOS11+, and ideal for secure NFC and IoT applications like cryptocurrency wallets and NFTs. Made from photo-quality PVC or other materials in CR80 size.
Note: Cards are supplied in factory-default condition, with no data pre-encoded. For pre-encoding to enable immediate verification, please contact us for pricing.
