https://www.cnet.com/news/7-eleven-joins-cashierless-trend-with-grab-and-go-test/

7-Eleven is testing the pay-and-go feature in Dallas with plans to expand to other cities. You can download the 7-Eleven app and register for the loyalty program. When you're near a pilot store, a pop-up will say "start scanning," then you can scan the items you want and pay for them on the app. Once you've paid, a confirmation QR code will let you scan it at the confirmation station by the door and go.

Last week, Walmart Sam's Club announced plans to test out its own cashierless concept at a store in Dallas that'll let you make purchases on your phone. You scan items as you pick them up and check out by having a worker scan the code on your phone.