The card on Tench's chest opens nothing. He knows this. He wears it against the sternum anyway, on a length of relay cable he cut to size himself, where a borough kid might wear a saint. It is a water-authority maintenance credential. The laminate has gone soft at one corner and the magnetic strip is worn to silver. The name on it is not his. It reads PETRA VANE.
Petra Vane kept the taps running under Bermondsey for nine years. She was a relay rat, which down there is not an insult, it is a job and a small dignity. She drowned standing up in a stack flood two winters ago, river from below and a burst concourse main from above. The pumps lost the arithmetic. They recovered her credential before they recovered her. Tench was on the next shift. He has worn the card since.
A dead credential is a specific object in this city, and the people who live by access codes are precise about it. It is a token that should still work and might not, a code you carry to a terminal without knowing whether the door will read you as a person or as no one. Petra's card is dead in both senses now. It will not raise a single sluice gate. The authority killed the file the week after the funeral, the way they kill all of them, quietly, on a schedule.
What it still does is hold a name where people can see it. That is the whole function it has left. On the upper platforms of the Waterloo Interchange, on market days, it turns out to be a function with a market.
I went up to the Interchange to look at the credentials and spent the afternoon looking at the people wearing them. You see them once you know. A chain at the throat with a laminate tag riding it. A jacket front layered with three, four, employers and territories and one outfit that officially never existed. The style writers call it stacked patch logic. The relay rats call it carrying your dead. Both are accurate. The look knows exactly what it is.
At the third table from the stairs a man named Cormac sells them by weight. Not the real ones, he is quick to say. The real ones come off real people and those are not for sale, those are given. What Cormac sells is the look. Blank laminate through a heat press, a name you pick, a water-authority sigil close enough to pass at arm's length. Thirty tokens for a single, a hundred for a weathered set of four with the corners pre-softened so they read as old grief. He showed me a card he had pressed that morning. The name on it was no one's. He had invented her, and given her nine years under Bermondsey too. The detail came free.
This is the part I keep returning to. The counterfeit is not of the object. Anyone can press a card. What Cormac counterfeits is the loss. He sells the appearance of having buried someone worth wearing, to people who want to read at arm's length as though they had. He is good at it and not ashamed of it. When I asked who buys, he said borough kids mostly, and operators who want to pass as borough kids, and once a faction officer who wanted four names and would not say for whom.
Tench will not buy from Cormac and will not sell to him. I asked what the real card was worth, Petra's, and he looked at me the way you look at someone who has asked the wrong question politely. It is worth nothing, he said. It opens nothing. That was the point he was making. The value left the day the authority killed the file, and everything on the card after that was the part that had never been for sale.
He told me the cable he strung it on came off the same relay line that flooded. He cut it short so the card would sit high, over the heart, where it reads. Then he said the sentence I carried back down the stairs with me. Down here the system stops knowing your name the day you stop being useful to it. So someone else has to keep knowing it. He tapped the card once. Someone else does.