Method and apparatus for creating a second unique identifier for a user in a second system based on a first unique identifier for a user in a first system. A first authentication process is initiated based on a first unique identifier associated with the user in the first system. Responsive to the user successfully authenticating during the first authentication process, the second unique identifier for a user in the second system is generated. The second unique identifier is based on user data associated with the first unique identifier in the first system, and the second unique identifier is different from the first unique identifier.