A customer uses an Apple Inc. iPhone to pay via the Apple Pay system, from their American Express Co., account, at the check-out till inside a Pret A Manger Ltd store in this arranged photograph in London, U.K., on Tuesday, July 14, 2015. Apple Inc. is making the U.K. the first market outside the U.S. for its digital-wallet system as the company fights for a place in the electronic-payments industry. Photographer: Chris Ratcliffe/Bloomberg via Getty Images
