NFC (Near Field Communication) - definition
NFC (Near Field Communication) - definition
NFC (Near Field Communication) is a short-range wireless communication technology that enables the exchange of data between electronic devices in very close proximity - typically up to a few centimetres. It operates in the 13.56 MHz frequency band and is based on the principle of electromagnetic induction, which allows communication between active devices (e.g. smartphones) and between an active device and a passive tag or card.
NFC enables fast and secure point-to-point connections without the need for prior pairing or configuration, making it convenient for everyday use. Depending on its mode of operation, the technology can operate in one of three modes: card emulation, read/write and peer-to-peer. This makes it applicable to applications such as contactless payment, electronic ticketing, access cards, user identification, data transfer or device pairing Bluetooth.
Unlike other radio technologies such as Wi-Fi or Bluetooth, NFC is characterised by a very limited range and low throughput, which, however, translates into greater transmission security and resistance to unauthorised access. A special feature of NFC is also the ability to operate without a power source on the passive side - NFC tags can be powered by energy from the electromagnetic field generated by the active device.
Standards related to NFC technology are developed and maintained by the NFC Forum organisation, which ensures device compatibility and interoperability. NFC is based in part on earlier solutions RFID (Radio Frequency Identification), but extends their functionality to include bidirectional, dynamic information exchange. The integration of NFC with mobile device operating systems and cloud services enables its use in advanced applications IoT, building automation and security systems.
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