Mine said Mobile Entry last year, too, but I used my passport to get in and emailed tickets all the time. Some people used their phones, some used the printout, some just had them on their own account. Here's what the my ticket account reads:
"This icon on an event means you can also get in with your smartphone. Simply log in to My My Smashville Tix AccountManager using your smartphone, select an event, and click 'view tickets'"
I hope smart phones aren't the only option but I'll figure it out. What do they do about people who don't want to spend $400+ on a phone just to go to hockey games? I know two people right off hand who still use flip phones. It's rare but it happens!