Do I need to have a physical, paper ticket?

You are not required to have a physical, paper ticket, it is perfectly acceptable to display your ticket on your smartphone, either through the Billetto App or by downloading and opening the PDF file directly from your email. 


Not only is this often more convenient in general, but you'll be reducing your carbon footprint and saving trees simultaneously. If you don't start looking after the Taiga, who will... right?