Mobile boarding passes? The paper ones are not immobile. They are real easy to move around.
(Please, no posts about how stupid I am. It's a joke.)
If we are talking about electronic boarding passes, then the language works.
I am reminded of a friend that gave his dad a battery powered screwdriver. His dad wanted to know what it was. "It's a cordless screwdriver." Dad's answer, "So, whats the big deal, none of my old screwdrivers have cords."