[kristopolous]

Yes, the whole idea is about as plausible as this april fools joke: https://en.wikipedia.org/wiki/Evil_bit ... but it's been put forth and implemented too many times for comfort.

Each time these silly systems like DVD-CSS broke down and became worthless or like DIVX, were widely panned and rejected by the consumer.*

Showing how this will always and forever be the case at a more fundamental level to stop trying this deadbeat idea with different gift-wrapping would be great.

* Even in MP3, you have bits 29 and 30 which are for copyright. What were they thinking? people would re-implement /bin/cp to look for that and fail if the bit is set? Really? AAC has something similar. silly.

[ashmud]

If all the vendors participate in the scheme, it works?

Ex: SCMS copy bit

https://en.wikipedia.org/wiki/Serial_Copy_Management_System