 Vista includes an enhanced set of anti-copying technologies, based on Windows XP's Windows Genuine Advantage, called Software Protection Platform (SPP).In the initial release of Windows Vista (without Service Pack 1), SPP included a reduced-functionality mode, which the system enters when it detects that the user has "failed product activation" or that the copy of Vista is "identified as counterfeit or non-genuine".A Microsoft white paper described the technology as follows