I believe that CSS is not related to the region coding mechanism used in DVD boxes and software. The region code is specified on the DVD during the authoring phase with a code of 1 - 5. The player is hard-wired with the code of the region it is intended for during manufacturing. When a DVD is accessed, the player checks to see if the region code on the disk matches the player's code - if it doesn't it won't play it. I don't believe that CSS plays any part in this.

Also, regarding the previous post about being able to copy CSS-encrypted content to a blank DVD. That is not supposed to be able to happen with consumer-related DVD-R disks. The "DVD-R for General" specification does not allow the burning of disks with CSS-encrypted media. "DVD-R for Authoring" does allow this but that form of media is much less common and more expensive. the Pioneer DVR-103, 104, 105 (aka Apple Superdrives) drives only write to "General" format DVD media. Note that not all DVD media is CSS encrypted - that may be why you think that DVDs can be copied like that. Of course, there may be someway of compromising the security of the DVD-R standards that I'm not aware of .