An NFC business card is a modern type of business card that uses Near Field Communication (NFC) technology to electronically transfer information between two nearby devices, such as smartphones. 

These cards contain an embedded NFC tag, a small, reusable piece of hardware that stores your contact details. When someone taps their NFC-enabled device against your card, the stored information is instantly transferred to their device. This makes sharing your business card quick, easy, and environmentally friendly, as it reduces the need for physical cards. 

Additionally, NFC business cards can be updated with new information without needing to print new cards, offering a versatile and sustainable solution for networking.