That sounds like what they do to satellite cards. Send unauthorized ones a signal to erase the eprom, or switch the encryption on the fly, but if you aren't authorized, yours doesn't get the new key. I'll never use something like that. There might be a market for this for pay for view (Super Bowl, title prize fight, World Series) but high definition TV and most movies are still a vast (digital) wasteland. And I don't think p0rn would really be more attractive in high res. Some things are better left to the imagination.