Near field communication, also commonly known as NFC, is an emerging form of contactless communication between devices like smartphones or tablets. This is in contrast earlier systems where contactless smart cards only supported one-way communication.
This form of communication allows a user to wave their smartphones or tablets over a NFC compatible device. The device then sends information to the supported system and hence enables the user to perform multiple operations.
Near Field Communication (NFC) uses electromagnetic radio fields as compared to radio transmissions used in Bluetooth and Wi-Fi.