Near-field communication, or NFC, is a technology that allows devices to communicate wirelessly when they are very close to each other, usually within a few centimeters. This is commonly used in smartphones for tasks like making payments or sharing information by simply tapping two devices together. NFC is also found in contactless credit cards and smart tags, which can store information that can be read by compatible devices. This makes it easy to access data or perform transactions quickly and securely, enhancing convenience in our daily lives.