I use my phone to check boarding gates. No need to bother with screens, boarding passes, or people. I know as soon as the wheels touch the ground where I am arriving and where I am departing.

What I don't like is having to arrive early for boarding. It would be great if the boarding time on the pass actually matched what happens at the gate. But of course, with Sky Priority, you kind of have to get there early anyway to figure out which boarding method is being used (old, new, borrowed, or blue). :-\