[kmoser]

> Not to mention that the hard copy always scans flawlessly at the gate. Phone scans, not so much.

Not true. Recently I printed a hardcopy of my boarding pass at the airline's kiosk, then found it wouldn't scan at security. Luckily I was able to pull up the barcode on my phone.

[chickensong]

Ouch. Perhaps it's a dice roll either way. I guess I just assumed everyone else also had issues with phone tickets, and not with paper. You and your sibling comment have opposite experiences however, so it seems I must retract my statement.

[kjs3]

That's the point...always have a backup. You never know which failure mode is gonna find you.