Mr. Olesen, I have seen the app in use on METRA. A passenger holds his phone up to a "raygun" and it's good to go.
I've experienced it myself overseas. Riding from Munich to Salzburg during '18, I could not locate my printed confirmation for the ticket. Oh boy, it's the start of the trip so I had € on hand to cover the fare, but who wants to pay twice. So here comes the Conductix, and speaking English is not a requisite to be such on DB. Another passenger helped me, and said to me, and who knows what to her, is your confirmation on your phone?
I looked and there it was; so Conductrix aims her "raygun" at my phone - and that was that.
Well, for my return, I did get the ticket printed. Hard copy on paper is what I know.
I've experienced it myself overseas. Riding from Munich to Salzburg during '18, I could not locate my printed confirmation for the ticket. Oh boy, it's the start of the trip so I had € on hand to cover the fare, but who wants to pay twice. So here comes the Conductix, and speaking English is not a requisite to be such on DB. Another passenger helped me, and said to me, and who knows what to her, is your confirmation on your phone?
I looked and there it was; so Conductrix aims her "raygun" at my phone - and that was that.
Well, for my return, I did get the ticket printed. Hard copy on paper is what I know.