Bribery, tax evasion, money laundering, counterfeiting, corruption, even the finance of terrorism. These are among a long list of crimes enabled by the use of “cash.” The attempt to crack down on these crimes is driving governments and a range of companies to pursue the potential of a cashless society.

“Cash plays a big role in crime. I think there’s a reason cash is king,” says Harvard economist Kenneth Rogoff, who has written extensively on the costs and benefits of phasing out paper currency.