Bank and credit cards are a medium of trust. Trust is the basic relation of the entire financial sector, which is essentially virtual. It is upheld by unconditional trust, by blind faith, so to speak, in the functioning of this virtuality. Once the basic pact of trust is broken, the entire system can collapse in a moment. Nowadays, financialisation is an extremely complex system, in which as little as possible is left to trust and financial stakes are ever more insured, but credit remains at the heart of it all: somebody gives us something hoping we would give it back one day. The creditor shows trust while we spend our future.