Near field communication
Near field communication (NFC) is a set of communication protocols that enable two 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 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
External links
- Near field communcation @ Wikipedia
