The Future of Money
When Your Money Can Be Switched Off
The next version of your national currency might know exactly what you buy, when you spend it, and — in the hands of the wrong government — whether you're allowed to spend it at all.
The Idea
Central Bank Digital Currencies, or CBDCs, are not cryptocurrencies. They are not PayPal. They are government-issued digital money — the digital equivalent of a banknote, but one that could, by design, carry memory and conditions. Over 130 countries are currently exploring or piloting them, including major economies whose central banks are openly testing retail versions available to ordinary people. Here is where it gets interesting — and unsettling. Physical cash is anonymous. When you hand over a note for a coffee, no one records that transaction in a ledger attached to your identity. A CBDC doesn't have to work that way. Because it is software, it can be programmed. It can carry expiry dates. It can be restricted to certain categories of spending. It can, theoretically, be frozen for a specific individual without touching anyone else's funds. Advocates argue this is precisely the point: programmable money could eliminate tax evasion, streamline welfare payments, and shut off the financial lifelines of criminals and sanctioned states overnight. These are real benefits. But the same architecture that lets a government direct stimulus funds toward groceries and not gambling also lets an authoritarian government decide that a political dissident's balance becomes unreachable on a Tuesday morning. This isn't speculative dystopia. It is a live design question that engineers, economists, and civil liberties lawyers are actively arguing about right now — largely outside of public view.
In the World
China's digital yuan — the e-CNY — is the most advanced large-economy CBDC pilot in the world. It has been tested across dozens of cities, distributed through lotteries, and used at the 2022 Beijing Winter Olympics by international visitors. On the surface, it looks like any other mobile payment system. But the e-CNY is built with what Chinese authorities call 'controllable anonymity': anonymous to other users, but fully visible to the People's Bank of China. Transactions are traceable. The system has also been designed with the capacity for expiry — money that, if not spent within a set window, simply ceases to work. This is partly a tool for economic stimulus (it nudges spending), but it is also a demonstration of something more significant: that the state can define the conditions under which money functions. During the 2022 protests in Hong Kong, activists had already discovered that digital payment systems were a vulnerability — transit cards linked to identities could place protesters at specific locations. A fully implemented CBDC would close even the last remaining gap: cash. If physical currency is eventually phased out in favour of its digital replacement, there is no fallback that preserves anonymity. The European Central Bank, by contrast, is designing its digital euro with privacy protections explicitly written into the architecture — a sign that the same technology can be built very differently depending on the political values embedded in its design.
Why It Matters
Most conversations about the future of money focus on inflation, interest rates, or whether cryptocurrency will ever go mainstream. Surveillance money reframes the question entirely. It asks: what is money actually for, and who does it serve? Cash has always been quietly radical — it lets people transact without permission. That's inconvenient for governments trying to track illicit flows, but it is also what allows a domestic abuse survivor to save money without a controlling partner seeing it, or a dissident to fund opposition activity, or simply an ordinary person to buy something embarrassing without it entering a permanent record. The design choices being made right now — in Beijing, Frankfurt, Washington, Lagos — will shape what privacy means in economic life for generations. These aren't abstract policy questions. If a digital currency rolls out in your country and physical cash is gradually retired, the terms of that system will affect every financial act you take. Knowing that this architecture is being built — and that it is not inevitable that it is built badly — is the first step toward demanding something better.
A Question to Ponder
If your government introduced a digital currency tomorrow and promised it would only ever be used to catch criminals, how much would you trust that promise — and what would it take for that trust to be justified?
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