See Gürtler, S., and Rasmussen, S. Central bank digital currency in Denmark?, December 2017. See Bank for International Settlements, ”Central bank digital currencies”, March 2018. 8  Probably the most important issue is whether the digital currency should be traceable or whether it should be designed to guarantee, to the extent possible, anonymity.
Cash has always been an incredible instrument: it allows for third-party anonymity in transactions and leaves no trace. While this implies that it is an effective means of payment for illicit activities such as money laundering, the financing of terrorism or tax evasion, it also ensures privacy for its users. The possibility of tracing our digital transactions may have important economic and ethical implications.