A MAC Address is a unique set of numbers and letters that identifies a wired or wireless interface for the device you are using to connect to the internet. Companies like Apple, Intel, Samsung, and others, assign these unique identifiers to your devices as a way of connecting to the internet. You will need to assign your device’s MAC address to your account.
Below are links to instructions for locating MAC addresses of some of the more common device manufacturers. If your device is not included below, conduct a web search for how to find the MAC address for that device and follow those instructions.