MAC Address

Uniquely identifying hardware serial number, details ...
Found on http://www.cryer.co.uk/glossary/m/index.htm

MAC address

Media Access Control address is a unique numeric identifier assigned to each device connected to an Ethernet network. It is used for data transmission and security functions.
Found on http://www.youngco.com/young2.asp?ID=4&Type=3

MAC Address

The hardware address of a device connected to a network. In Ethernet, the Ethernet address.
Found on http://www.nacs.uci.edu/network/network-glossary.html

MAC address

A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet. Logically, MAC addresses are used in the media access control protocol sublayer of the OSI ref
Found on http://en.wikipedia.org/wiki/MAC_address
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