Near-Field Communication (NFC) is a short-range wireless technology that allows devices to communicate when they are close to each other, typically within a few centimeters. It is commonly used for contactless payments, enabling users to make transactions by simply tapping their smartphones or NFC-enabled cards on a payment terminal. NFC operates on the principle of electromagnetic induction, allowing data exchange between devices without the need for physical connections. This technology is also used in applications like electronic ticketing, access control, and sharing information between devices, making it a convenient option for everyday interactions.