After DVD-Video's Content Scrambling System (CSS) was cracked and all DVD titles could easily be decrypted and copied, movie studios looked to technology to re-enforce copy protection of DVDs. One of the biggest known attempts is ARccOS, which seems to have made its return in the DVD versions of Casino Royale, Stranger Than Fiction and The Holiday.
One consumer who inquired about the defective DVDs was told by Sony that it is the responsibility of the manufacturer of his DVD player to provide a firmware update that fixes the playback problems with the technically "broken" DVDs.
Source:
Wired













