View source for Near field communication

'''Near field communication''' ('''NFC''') is a set of [[Communication protocol|communication protocols]] that enable two [[Electronic device|electronic devices]], one of which is usually a portable device such as a [[smartphone]], to establish communication by bringing them within 4 cm (2 in) of each other.

== Description ==

NFC-enabled portable devices can be provided with apps, for example to read electronic tags or make payments when connected to an NFC-compliant apparatus.

== Earlier technology ==

Earlier close-range communication used technology that was proprietary to the manufacturer, for applications such as stock ticket, access control and payment readers.

== Principle ==

Like other "proximity card" technologies, NFC employs [[electromagnetic induction]] between two [[Loop antenna|loop antennae]] when NFC devices -- for example a smartphone and a [[smartposter]] -- exchange information, operating within the globally available unlicensed radio frequency ISM band of 13.56 MHz on ISO/IEC 18000-3 air interface at rates ranging from 106 to 424 kbit/s.

== See also ==

* [[Bluetooth]]
* [[Electromagnetic induction]] 
* [[Loop antenna]]
* [[Telecommunication]]

==  External links ==

* [https://en.wikipedia.org/wiki/Near_field_communication Near field communcation] @ Wikipedia