what is an nfc tag

An NFC (Near Field Communication) tag is a passive electronic tag that can be read, and under some circumstances written to, by an NFC device. NFC tags are small chips that can store data and communicate with compatible hardware using radio waves. They are powered by the device that reads them through magnetic induction. NFC tags are used for identification, authentication, tracking, and secure personal data storage. They are typically read-only in normal use, but may be rewritable. NFC tags come in various shapes and sizes, from small stickers to credit card-like plastic cards. They can be used to automate tasks and for better communication between devices. Smartphones are also powered NFC devices that are capable of acting as an NFC tag. NFC tags can even turn your home into a smart home.