JD Lasica has another excellent excerpt from his new book, Darknet: Hollywood's War Against the Digital Generation (Story: Your Locked-Down Digital Future).

Hollywood is adding such little-known weapons to its arsenal as “certification” and “renewability”—new forms of copy control that are about to enter the living room by stealth. (Another feature, called "selectable output control," allows copyright owners to turn off a viewer's set-top box's outputs under certain circumstances, as when a copy protection scheme has been hacked. But consumer groups and electronics companies say honest viewers shouldn't be prevented from, say, playing HDTV movies or recording high-def television just because someone somewhere else foiled the industry's copy control system.)