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NFC (Near Field Communication) is a short-range wireless communication technology that enables data exchange between two electronic devices placed within a few centimeters of each other—typically less than 4 cm. It operates at 13.56 MHz and is commonly used in mobile phones, contactless payment systems (like Apple Pay, Google Pay), digital ID cards, transit passes, and device pairing.
NFC supports three modes:
- Reader/Writer mode – for reading tags and smart posters.
- Peer-to-peer mode – for sharing files between devices.
- Card emulation mode – for using the device like a contactless card.
NFC is valued for its speed, security, and convenience, particularly in mobile payments and quick device interactions without the need for pairing or configuration.
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