Preferred gas station here did something to the UI--you can "pay" by waving your phone at it, but then it will prompt for your zip code. When you enter the zip code there's a couple of prompts about ensuring you know you're paying credit price--oops, entering the zip code also answers no to the first question.
I'm sure it's a bug--they're not adequately debouncing the key and it's being taken as an answer to the next question. I've told them but I doubt the people in the store have an adequate way of pushing a bug report like that up the chain.
