NFC – Near field communication wiki definition

Near-field communication (NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 cm (11⁄2 in) or less.[1] NFC offers a low-speed connection through a simple setup that can be used to bootstrap more-capable wireless connections.Like other “proximity card” technologies, NFC is based on inductive coupling between two so-called antennas present on NFC-enabled devices—for example a smartphone and a printer—communicating in one or both directions, using a frequency of 13.56 MHz in the globally available unlicensed radio frequency ISM band using the ISO/IEC 18000-3 air interface standard at data rates ranging from 106 to 424 kbit/s.

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More details about NFC technology on wiki page: NFC – Near field communication

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