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Capabilities [edi] BD+ is effectively a virtual machine embedded in authorized players. It allows content providers to include executable programs on Blu-ray Discs. Such programs can:l’] « examine the host environment, to see if the player has been tampered with. Every licensed playback device manufacturer must provide the BD+ licensing authority with memory footprints that identify their devices. « verify that the player's keys have not been changed. « execute native code, possibly to patch an otherwise insecure system. « transform the audio and video output. Parts of the content will not be viewable without letting the BD+-program repair it.