I was on the train and prepared to display my fairly expensive ticket to the conductor. The app worked fine, but displaying the ticket, crashed. The conductor didn’t speak english, and I didn’t speak french. Bummer.
My battery drained while I took a layover in Munich. Without a QR code the gate would not let me board. To secure a new copy I would have to go to the departures hall and back. Bummer.
You face these situations every day, where when facing a problem, it is a feature by design that appears very stressful for you.
Consider before printing for me is just a reminder.
Do not forget to print.