Hi MKiker
This card (Code QR) has to be presented on the train for the control. According to my information, you can send the order by email to your friends. Travellers must have an internet connection to open the mail. Otherwise, it is better to print the document with QR code.
For all other questions, i advise you to contact our Contact Center at +41 (0)848 44 66 88.
Regards
NicolasK