Next generation copy control

After reading yet another article in the newspaper on Macromedia's next effort to restrain illegal copying of content: Ripguard, I was pondering on how this race would evolve. Just like with viruses, it's a continuous battle.
Since most appliances will be always on in a few years time because of Wifi, UMTS, and IPv6, why not create a central login/control mechanism? For example: like a polling security device that halts once it doesn't receive a control signal anymore.

Should you want to brain storm on the subject, feel invited to do so.