Future of Window Shopping

Window shopping only works when you can buy something, but when a store is closed, then you can't, right?  Well, not anymore.  Currently, you often see QR Codes or other ways to connect to the retailer's website, but this would also create an experience with the window itself.  PayPal's demo at LeWeb of an interactive window shopping experience would turn that window into a shopping opportunity 24 hours a day.