Using the QR code reader or the NFC capability on smartphones, fast food restaurants can let customers see the menu, order what they want, and pay for it directly from their phones. When a code is scanned or a phone is swiped in the NFC reader, a menu pops up. Then people can check off what they want to eat and hit Send. Their credit card is charged via the MasterCard functionality. And when the food is ready it’s delivered right to the table.