This is what an e-krona could look like
(WorldNews Sweden)

Date20/09/2017 Will Sweden get the krona in an electronic format, the so-called e-krona, as a complement to cash? This question is currently being investigated by the Riksbank. The reason for this is that digital payments, for example by card, are in the process of eliminating payments using banknotes and coins. This trend towards a cashless society could ultimately make society vulnerable in that the payment market would be concentrated among a small number of private participants. The proportion of cash payments in the retail sector fell from 40 per cent in 2010 to 15 per cent...