A MAC (Media Access Control) address is a unique identifier assigned to a network interface controller (NIC) in a device, ensuring seamless communication within local networks. It functions as a digital fingerprint, allowing devices to identify each other and exchange data. Unlike an IP address, which can change, a MAC address remains static and is tied to the hardware. It is crucial for network performance, enabling proper packet delivery. However, it has limitations, such as being vulnerable to spoofing. Securing your MAC address can help protect privacy and prevent tracking in an increasingly connected world. https://www.speednetlte.com/post/what-is-a-mac-address