An NFC business card app allows users to create, store, and share digital business cards using Near Field Communication (NFC) technology. Instead of handing out physical cards, users can tap their NFC-enabled phone or card against another device to instantly transfer contact details, social media links, websites, and other relevant information. These apps often provide customization features, analytics to track interactions, and seamless integration with existing contact management systems. It's a modern, eco-friendly way to network while making a lasting impression!