Near Field Communication: short-range wireless technology which enables the communication between devices over a short distance. RFID reader antennas emit electromagnetic radiation (radio waves). If an RFID tag is within one full wavelength of the reader, it is said to be in the "near field".  Distances more than one full wavelength away, are described as "far field." A near field signal decays as the cube of distance from the antenna.  A far field signal decays as the square of the distance from the antenna. Passive RFID systems that rely on near field communication (typically low-frequency and high-frequency systems) have a shorter read range than those that use far field communication (UHF and microwave systems)

Abbreviation: NFC