NFC (Near Field Communication) coils are the heart of contactless communication technology. These compact, wire-wound components generate electromagnetic fields, enabling short-range wireless data transfer between devices. Typically made from copper wire, NFC coils are carefully designed to optimize signal strength and efficiency within a small form factor. They’re crucial in smartphones, payment cards, and various IoT devices, facilitating tasks like mobile payments, access control, and data exchange. The coil’s design, including factors like wire gauge, number of turns, and overall shape, directly influences its performance and read range. As NFC technology continues to evolve, these coils are becoming increasingly miniaturized and efficient, opening up new possibilities for seamless, low-power communication in an ever-expanding range of applications.