Near-Field Communication (NFC)

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Summary

Introduction

Near-field communication (NFC) allows two devices to communicate within 4cm using short-range radio on the 13.56MHz band. NFC shares some of its technology stack with Radio Frequency Identification (RFID), though it is a newer technology with more features, most notably the ability to write as well as read data.

NFC is specified in a number of ISO standards, including ISO/IEC 14443A, ISO/IEC 1443 B and FeliCa, and ISO/IEC 18092.

While RFID is a read-only technology, NFC allows for two-way communication between the NFC “tag” being read and the NFC reader. Common uses include contactless payment, smart cards, door access fobs, attendance tracking, and more.

Devices

Adafruit Industries 2800 Sources
Description 13.56 MHz read/write tag Digikey CAN$ 4.32
Datasheet PDF
Resources

Notes

Variants

Media