====== Near-Field Communication (NFC) ======

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This article is under construction.
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=====  Summary  =====
See also: [[sensors:radio_frequency_identification|Radio Frequency Identification (RFID)]]
====  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 [[sensors:radio_frequency_identification|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  =====

{{template>device
|company=Adafruit Industries
|model=2800
|sources=[[https://www.digikey.ca/en/products/detail/adafruit-industries-llc/4034/9826286\|Digikey]] CAN$ 4.32
|description=13.56 MHz read/write tag
|datasheet=[[https://media.digikey.com/pdf/Data%20Sheets/Adafruit%20PDFs/4034_Web.pdf\|PDF]]
|resources=
|notes=
|variants=
}}
=====  Media  =====

=====  External links & references  =====
  * [[wp>Near-Field Communication]]
  * [[https://www.iso.org/standard/56692.html|ISO/IEC 18092:2013]]

{{tag>Sensor Radio_frequency Identification Tracking}}