We had the battery in my wife's MBA replaced, and I paid via Apple Pay. Very easy process, but I messed it up by trying to press the fingerprint icon that was displayed on the screen rather than touching the home button. Made me feel foolish, but after that, the process couldn't have been easier. I can't wait until everything works this way, and I'm sure it will. The guy who checked me out said that I was the second one to use it with him.