JACK is running late, but he daren't risk speeding - the satellites are watching and he can't afford another fine. It's not as if he could drive much faster anyway, not in this traffic. His in-car traffic navigation system warns of a snarl-up ahead and recommends an alternative route, but Jack asks for another suggestion. He knows that if he drives through that area at this time of night his "pay-as-you-drive" insurance premiums will go through the roof.

Meanwhile, he can see on his phone's built-in location tracker that his girlfriend has already arrived at the restaurant. At this rate he's going to be at least half an hour late. When his phone rings he assumes it's her, but instead it's a video clip - an advert from one of the shops in a nearby retail park. As he deletes it another pops up, and then another. Cursing the day ...