NFC tags are compact wireless devices using NFC technology for short-range (up to 10cm) data exchange. Passive by design, they draw power from nearby NFC-enabled devices like smartphones when tapped, using an embedded antenna and chip to store/transmit info.Capable of storing URLs, contact details, or commands, they enable instant interactions: tap to pay at terminals, share files between phones, or trigger actions like opening a website or connecting to Wi-Fi. Popular for their simplicity and low cost, these tags enhance everyday tech with seamless, touch-based solutions in payments, marketing,access control, information sharing and smart home setups.