 Additionally, "PVP-UAB" (Protected Video Path - User-Accessible Bus) is used to encrypt video and audio data as it passes over the PCI-Express bus, to prevent it from being intercepted and copied on the way to the graphics card.It is complementary to PVP Output Protection Management.In January 2007 the developer Alex Ionescu announced that he had found a method that allows end users to bypass Vista's Protected Media Path.