When it comes to redefining the brick-and-mortar shopping experience, no major retailer even approaches what Apple has done with the Apple Store. The Apple Store had real mobile payments long before anyone else, as well as in-aisle payments, long before anyone else.
(To this day, Starbucks, which often proclaims itself as a mobile payments leader, offers neither. Its mobile payment app simply displays a picture of the Starbucks card barcode. Starbucks deserves kudos for its efforts at behavioral changes — meaning getting consumers in the habit of paying via their phone — but its approach represents placeholder mobile payments at best.)