NFC Tag Types Explained
The NFC Forum defines five standardized nfc-tag types, each based on a different underlying RF protocol. Understanding these types is essential for selecting hardware that matches your application's memory, speed, and security requirements.
Why Tag Types Exist
NFC emerged from the convergence of multiple RFID standards. Rather than mandate a single physical layer, the NFC ForumNFC ForumIndustry body developing NFC standards, specifications, and certifications since 2004View full → created an abstraction: a common NDEF data model that sits on top of each protocol. Tag types differ in their underlying RF standard, memory capacity, and access control features, but all support NDEF storage when formatted correctly.
Tag Type Comparison
| Feature | Type 1 | Type 2 | Type 3 | Type 4 | Type 5 |
|---|---|---|---|---|---|
| RF Standard | ISO 14443ISO 14443Standard for contactless smart cards at 13.56 MHz (Types A and B)View full →-3A | iso-14443 Type A | nfc-f (JIS X6319-4) | ISO 14443-4 A/B | iso-15693 |
| Air interface | nfc-a | nfc-a | NFC-F | NFC-A / nfc-b | nfc-v |
| Memory (typical) | 96 B | 64–888 B | 2 KB | 2–64 KB | 8–64 KB |
| Data rate | 106 kbit/s | 106 kbit/s | 212/424 kbit/s | 106 kbit/s | 26.5 kbit/s |
| Example chips | Topaz 512 | NTAG213/215/216 | Sony FeliCa | MIFARE DESFire | ICODE SLI |
| Typical use | Simple URLs | General-purpose | Transit, loyalty | Secure access | Item-level RFID |
Type 2 Tags: The Consumer Default
Type 2 tags — particularly the NTAG2xx family — dominate consumer NFC deployments. They are cheap ($0.05–$0.20), widely supported, and offer enough memory (144–888 bytes of user-memory) for URLs, vCards, and Wi-Fi credentials. The uid is 7 bytes, guaranteed unique from the factory.
Type 4 Tags: Security-First
Type 4 tags implement the full ISO 14443-4 command set, enabling T=CL transport. They support password-protection and optionally aes-encryption, making them suitable for access control and authenticationauthenticationIdentity verification of NFC tags/readers via passwords or cryptographyView full → applications where Type 2's simple lock bitslock bitsControl bits making memory blocks permanently read-onlyView full → are insufficient.
Type 5 Tags: Long Range
Type 5 (nfc-v) operates under ISO 15693ISO 15693Standard for vicinity-range smart cards, 1+ meter read rangeView full →, which supports read ranges up to 1 m with suitable readers — far beyond the 4 cm limit of Types 1–4. This makes Type 5 useful for supply chain item tracking where the tag is embedded in packaging and readers must work without precise alignment.
Choosing a Tag Type
- Consumer interaction (tap-to-open URL, social): Type 2 (NTAG213)
- High-memory payloads (vCard, config data): Type 2 (NTAG216) or Type 4
- Secure authentication / access control: Type 4 (DESFire EV3)
- Transit / loyalty with fast read: Type 3 (FeliCa)
- Supply chain, item-level, long range: Type 5 (ICODE SLIX2)
Use the NFC Chip Selector to filter by tag type, memory, and security features. The NFC Memory Calculator helps size your NDEF payload against available user-memory.
See also: NFC Chip Comparison Guide for a deeper look at specific silicon families.