NFC Forum

The NFC Forum has mandated that the four tag types be operable with NFC devices.

The NFC Data Exchange Format (NDEF) specification and four Record Type Description (RTD) specifications were released in 2006. These specifications are also available for download at www.nfc-forum.org/specs.

The operation specifications for the NFC Forum tag types, numbered 1-4, provide the technical information required to implement the reader/writer and associated control functionality of the NFC device, enabling interaction with the tags. The four tag type specifications are:

  • NFC Forum Type 1 Tag Operation Specification – Type 1 tag is based on ISO14443A. Tags are read and re-write capable; users can configure the tag to become read-only. Memory availability is 96 bytes and expandable to 2 kbyte; communication speed is 106 kbit/s.
  • NFC Forum Type 2 Tag Operation Specification – Type 2 tag is based on ISO14443A. Tags are read and re-write capable; users can configure the tag to become read-only. Memory availability is 48 bytes and expandable to 2 kbyte; communication speed is 106 kbit/s.
  • NFC Forum Type 3 Tag Operation Specification – Type 3 tag is based on the Japanese Industrial Standard (JIS) X 6319-4, also known as FeliCa. Tags are pre-configured at manufacture to be either read and re-writable, or read-only. Memory availability is variable, theoretical memory limit is 1MByte per service; communication speed is 212 kbit/s or 424 kbit/s.
  • NFC Forum Type 4 Tag Operation Specification – Type 4 tag is fully compatible with ISO14443A and B standards. Tags are pre-configured at manufacture to be either read and re-writable, or read-only. Memory availability is variable, up to 32 KBytes per service; communication speed is up to 424 kbit/s.

Related to this see the Touch, Near Field page.

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