The idea that much of today’s cash use will shift to digital tokens is neither faddish nor outlandish, as long as you don’t start equating the future of money with Bitcoin.

Sure, governments will borrow some elements of the distributed ledger technology behind private cryptocurrencies, but they will very much want to retain control of what circulates as money in their economies. Some will succeed.

Don’t be surprised if by the end of the current decade, the e-wallet on your smartphone resembles a multicurrency account. But instead of dealing with commercial banks, you may be a customer of central banks. Several of them, in fact.