Many societies are becoming more and more cashless. Some restaurants won’t even take cash anymore. I usually take $200 from the ATM at a time, and this will usually last me at least six weeks. The NYT says that in Sweden, which has moved towards cashless more quickly than some other countries, “the government is recalculating the societal costs of a cash-free future.”
The article also references the fact that some tech types in Sweden are implanting a microchip into their finger which can be used to pay for things.
(Although it’s still a TINY number — “thousands” of Swedes are doing this, but the country has a population of 10 million.)