Near field communication (NFC) is a wireless short-range connectivity technology that allows data exchange between devices within 20 centimeters of each other through magnetic field induction. NFC allows intuitive device pairing without needing line of sight and works in various environments. It is based on RFID technology operating at 13.56 MHz and can transfer data at rates up to 424 kilobits/second. Common NFC applications include tap-and-go payments, ticket access, content sharing between devices, and smart posters for downloading media. NFC is expected to replace physical wallets and enable various contactless payment and identification uses in the near future.