https://www.reuters.com/article/us-france-cenbank-digital/french-central-banker-says-digital-currency-cannot-be-private-idUSKBN1ZO0FU >Digital currency could be useful as cash transactions dwindle in some countries but central banks should be in charge of issuing it, not private companies, Bank of France Governor Francois Villeroy de Galhau said on Saturday.