ANNALEE NEWITZ, ALTERNET [Oxford University researcher Jonathan Zittrain] thinks we're seeing the end of the freewheeling Internet and PC era. He calls the technologies of today "tethered" technologies. Tethered technologies are items like iPhones or many brands of DVR -- they're sterile to their owners, who aren't allowed to build software that runs on them. But they're generative to the companies that make them, in the sense that Comcast can update your DVR remotely, or Apple can brick your iPhone remotely if you try to do something naughty to it (like run your own software program on it).
In some ways, tethered technologies are worse than plain old sterile technologies. They allow for abuses undreamed of in the IBM mainframe era. For example, iPhone tethering could lead to law enforcement going to Apple and saying, "Please activate the microphone on this iPhone that we know is being carried by a suspect." The device turns into an instant bug, without all the fuss of following the suspect around or installing surveillance crap in her apartment. This isn't idle speculation, by the way. OnStar, the manufacturer of a car emergency system, was asked by law enforcement to activate the mics in certain cars using its system. It refused and went to court.