Here in Germany, the "Deutschlandticket", a country-wide public transportation ticket, is currently valid only via smartphone or "Chipkarte" (smart card). Unfortunately that smart card isn't available everywhere and won't be before early next year. It seems rather like a policy snafu then intended though [1].
I’ve been seeing more and more events that only have digital tickets. They say it almost like it’s a point of pride… all the paper they’re saving, or something.
Even here in Denmark that's still an option.