In Sweden, a Cash-Free Future Nears

Parishioners text tithes to their churches. Homeless street vendors carry mobile credit-card readers. Even the Abba Museum, despite being a shrine to the 1970s pop group that wrote “Money, Money, Money,” considers cash so last-century that it does not accept bills and coins.

Few places are tilting toward a cashless future as quickly as Sweden, which has become hooked on the convenience of paying by app and plastic.