The media access control address of an electronic device is the set of characters that uniquely identifies it on a network and it is generally located within the device's network or system settings. The MAC address is a series of six alphanumeric character pairs separated by dashes or colons.

MAC addresses are used on smartphones, tablets, computers, and printers. The MAC address is either assigned by a manufacturer or a network administrator. Some manufacturers label the MAC address as Ethernet ID, wireless hardware address, burned-in address, physical address or Wi-Fi address. A user manual provides specific information on how to locate a device's MAC address.