CD-KEY

An unique set of numbers or letters provided with software to help prevent software piracy. Without this required identification number a user would be unable to get into the software they are trying to install into a computer.

Microsoft Windows XP Product Key

Above is an example of the Microsoft Windows XP Home Edition Product Key found on the side of an OEM computer. In this example the last four sets of letters and numbers have been hidden to protect the unique key.

Also see: COA, Keygen, WPA