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NTAG 424 DNA TagTamper

NXP NTAG 424 DNA TagTamper is an NFC tag IC, operating at 13.56 MHz, supporting ISO/IEC 14443-A, NFC Forum Type 4, with 416 bytes user memory.

NTAG 424 DNA with tamper-loop detection

Source document ↗
Frequency
13.56 MHz
Protocol
ISO/IEC 14443-A, NFC Forum Type 4
Memory
416 bytes user memory
Interface
RF (contactless)
Temp Range
-25°C to +85°C
Form Factor
Wafer, FD (Flip-Chip Die)

Full Specifications

ManufacturerNXP
Frequency CategoryNFC
Frequency13.56 MHz
ProtocolISO/IEC 14443-A, NFC Forum Type 4
Memory416 bytes user memory
InterfaceRF (contactless)
Temperature Range-25°C to +85°C
Form FactorWafer, FD (Flip-Chip Die)
SecurityAES-128, SUN (Secure Unique NFC) authentication, originality signature, tamper-loop detection

Engineering Brief

The NTAG 424 DNA TagTamper is an advanced NFC tag IC that extends the NTAG 424 DNA family with integrated tamper-loop detection capability. It features AES-128 encrypted Secure Unique NFC (SUN) message authentication, allowing each tap to generate unique encrypted URLs for server-side verification without requiring the tag to be online. The tamper-loop function monitors an external conductive connection and flags irreversible tamper status when the loop is broken, making it ideal for security seals on pharmaceutical packaging, premium products, and supply chain applications requiring evidence of first-opening or package integrity.

Typical Applications

Standards & Compliance

Frequently Asked Questions

What is the NTAG 424 DNA TagTamper used for?

The NTAG 424 DNA TagTamper is used for tamper-evident security seals on pharmaceutical packaging, premium products, and supply chain applications. Its tamper-loop detection permanently flags when a conductive loop is broken, providing evidence of first-opening or package integrity breaches.

How does NTAG 424 DNA TagTamper tamper detection work?

The chip monitors an external conductive connection (tamper loop) and sets an irreversible tamper status flag when this loop is broken. This allows detection of package opening or seal tampering, with the status readable via NFC.

What is SUN authentication on NTAG 424 DNA TagTamper?

SUN (Secure Unique NFC) authentication generates unique AES-128 encrypted URLs on each tap that can be verified server-side without requiring the tag to be online. This enables secure product authentication and prevents cloning or replay attacks.

How much memory does the NTAG 424 DNA TagTamper have?

The NTAG 424 DNA TagTamper has 416 bytes of user-accessible memory for storing application data, NDEF messages, and configuration parameters.

What frequency does NTAG 424 DNA TagTamper operate at?

The NTAG 424 DNA TagTamper operates at 13.56 MHz using the ISO/IEC 14443-A protocol and is compatible with NFC Forum Type 4 standards.

Can NTAG 424 DNA TagTamper tamper status be reset?

No, the tamper status is irreversible once the tamper-loop is broken. This one-time flag ensures permanent evidence of tampering, making it suitable for security seals and anti-counterfeiting applications.

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