Question About Blu-Ray Security

[thunderhawk]

Originally Posted by Marwin

What has been proposed for Blu-ray Disc is a technology called ROM Mark, which pre-recorded discs can come "tagged" with (I think it's optional). If you were to copy the content from such a disc to a recordable/rewriteable disc an unmodified player would be able to detect the Mark encoded in the playback stream and if a matching ROM Mark isn't present physically on the actual disc the disc won't play. However, this shouldn't affect legitimate uses of the disc.

But what if you gain another player in time?
By law, if you use the disc in that player, it would still be a legal copy, but the player will refuse to play the disc.

My idea about copy protection is some kind of a fingerprint-like protection.
Its a code embedded inside the player and the discs. When you buy a disc, you should get a code, with the meaning of the location. This means, you buy a player with that code and then you play the legally bought disc on it. Now that disc gets the code too and when you copy the disc, the fingerprint goes on that disc too. If you buy another player, you should be able to get the fingerprint code on that player too, so you can play all your discs on that player too. If you would like to copy the disc and spead it over the internet or share it with someone else, it wouldn't be possible because the codes don't match. This is my copy protection idea.
Fingerprint-free movies will probably be released but shouldn't play on players.
My idea looks like the 'region codes' used in DVDs, only this is effective and with meaning, the region codes aren't from my point of view.

Any comments?