Scanners in baskets/carts is what they are replacing this with.
The ‘Just Walk Out’ system was as the name implies; grab product and leave. No scanners, no checkout, no cashiers; just cameras watching you shop, and a heavy implication that that video is primarily watched by AI to determine your purchases. AFAIK the only scanners were to read a qr code on entry to associate you with your amazon account; the rest is hands off. Or at least that’s what it’s supposed to be. Seems there’s a lot more labour under the hood than the advertising said. Shocker.