This MAC address is usedfor many different purposes; for example, some networks examine theMAC address of every device trying to connect to it, and lets onlythose through that it knows are safe.

For more general MAC address spoofing, your MAC address is trivially reset with tools available in default installs of most operating systems. Here are some examples: ...

MAC ATTACK iOS 8 to stymie trackers and marketers with MAC address randomization When searching for Wi-Fi networks, iOS8 devices can hide their true identities.