Similar to other functions around the Forum, this uses _WinAPI_UniqueHardwareID instead to create a unique id based on the user's hardware. If you're familiar with _Singleton or _SingletonPID, then you will understand how this works. Function: #include <APIDiagConstants.au3> #include <StringConstants.au3> #include <WinAPIDiag.au3> ; #FUNCTION# ==================================================================================================================== ; Name ..