NFC, the English acronym for Near Field Communication, is a short-range wireless communication technology that allows two devices to connect with each other, exchanging information or activating functions.
The communication system is bidirectional, i.e. data can travel from one device to another just by touching or being at a very near distance (less than 10 cm).
NFC is an evolution of RFID technology that uses electromagnetic induction to exchange information, and it is the basis for contactless payment methods.
Thanks to the characteristics inherited from RFID technology, authentication and connection between the two devices takes place completely automatically without the need to insert any PIN or password.