I mostly wore a Cloudveil ZeroG parka this season and it has a dedicated built-in upside down fabric pocket just above the left elbow for my season pass, which clips to an internal springlike plastic cord via a nice stainless steel clip. The pass hangs halfway out of its upside down pocket and most of the pass's bar code is exposed, and if not it's real easy for the liftie to pull the pass out a little further to scan it. This works way better for me than the clear plastic pockets I've tried in the past, as the optical scanner often can't see the bar code on the pass well enough through the clear plastic material.
Before making tree runs I tuck the pass all the way up into the upside down pocket and press the pocket's velcro closure shut. This is the most ingenius pass feature I have used - hats off to Cloudveil!
BTW, is any area using RFID technology rather than optical bar codes yet?