I think the leading implementation is Toast Tab at least in the Bay. I really like it and hope it becomes more prominent. https://pos.toasttab.com/products/mob

I think the leading implementation is Toast Tab at least in the Bay. I really like it and hope it becomes more prominent. https://pos.toasttab.com/products/mobile-order-and-pay https://pos.toasttab.com/products/mobile-order-and-pay >With Toast Mobile Order & Pay™, guests can easily scan a QR code to browse the menu, order, and pay, all from their mobile device. Plus with Apple Pay, guests can pay in less than 10 seconds.