Denmark: Personally 100% Apple Pay or MobilePay (DK based system). I haven't even touched a Kroner bill or coin in over a year. It has the added benefit of I just take my phone everywhere I go. The ultimate slim wallet is no wallet!
And here in Copenhagen there are very very few panhandlers or buskers, but several of the ones I have seen will put their MobilePay number on a cardboard sign.