Near Field Communication (NFC) is a technology which delivers wireless connectivity (RF) bi-directionally and short-range (to a max. of 10 cm). It has been jointly developed by Philips and Sony.
This NFC technology can be considered an evolution of the contactless RFID (Radio Frequency Identification) and similar technologies. NFC, contrary to other RFID devices, allows a bidirectional communication: when two NFC devices (Initiator and Target) are within a 4-8 cm radium, a peer-to-peer network is created and both can send and receive information. NFC works at a 13,56 MHz frequency and can reach a max. transmission speed of 424 Kbit/s.