NFC, or Near Field Communication, is a wireless communication technology that allows devices to exchange data and information within a close range, typically within a few centimeters. It operates at a frequency of 13.56 MHz and enables devices to communicate by bringing them close together.
NFC smart cards are a specific application of NFC technology in the form of cards embedded with an NFC chip. These cards can store and transmit data wirelessly to and from other NFC-enabled devices. NFC smart cards are used for various purposes, such as contactless payment systems, access control (e.g., building entry), public transportation payment (e.g., metro or bus fare), and identification badges. The communication between an NFC smart card and a compatible device is established by simply tapping or bringing the card close to the device, facilitating quick and convenient transactions or data exchanges.
