Originally Posted by
pbl22
Which, to be fair, you've been able to do using your mPass for at least the past couple of years (although I once turned up 8 mins before flight time at AKL and they had given my seat away

).
It's the international check-ins (especially for short transits/quick turnarounds), where this will be a godsend.
That has happened to me far too often when checking in at the gate. Hence why I love the new online check in. Frustrating when you then end up with a rubbish seat