7-Eleven, an American international chain of convenience stores, is rolling out its Mobile Checkout services to more than 3,000 U.S. stores. The retailer will offer mobile-based tech services in more than 32 states and all the major cities in the U.S. This Mobile app-based Checkout feature lets consumers scan products and pay for them using their phones. This technology will help customers have limited human interaction and escape the long checkout queues. The customers will use their phones to scan the QR code to make the payment.