Joystiq has mentioned the story:
http://www.joystiq.com/entry/1234000420067137/
http://www.joystiq.com/entry/1234000420067137/
Blu-ray Disc Association, led by Sony, representing one of two competing high-definition DVD formats, stated it will simultaneously embrace digital watermarking, programmable cryptography, and a self-destruct code for Blu-ray disc players.
The BDA statement is unprecedented not only because its solution to the nagging problem of digital rights management is to embrace every option on the table, but also because Blu-ray appears to have developed its own approach - in some cases, proprietary - to each of these three technologies.
The digital watermarking technique, which will be called ROM Mark, is described in the statement as "a unique and undetectable identifier in pre-recorded BD-ROM media such as movies, music and games."
One part of the announcement that had been anticipated by experts was Blu-ray's embrace of Advanced Access Content System (AACS), one version of which has also been adopted by the HD DVD Forum. This controversial technology would require that disc players maintain permanent connections to content providers via the Internet, making it possible for discs that fail a security check to trigger a notification process, enabling the provider to send the player a sort of "self-destruct code."