The problem with that is the same problem with self-checkout and Amazon Dash. It's solving a problem the retailer has -- the cost of employees -- by turning shoppers into store employees. But it doesn't really solve any problems that the shopper has because scanning all of your own stuff and laying it out on the scale is so inconvenient that it ruins everything else. The only place where I've seen self-checkout be as good or better than having a checker is Lowes or Home Depot, because they don't require you to weigh each item in turn to unlock the scanner so you can move as fast as a checker can. But I think grocery shopping will be the last place self-checkout moves in in a big way because the grocers insist on weighing everything you buy before unlocking the scanner.
Most of the retailers in my area have turned off the bag scale security. But I live in a pretty small town, so maybe theft is at an acceptable level where they’re willing to make that trade off. They’re also using more and more computer vision to ensure what passes into the cart is scanned (Everseen and others), so perhaps they’re finding better success with that than the bag scale.
The scale sensitivity was a bit off initially, but it seems okay nowadays. (If I dropped something on the bagging area it didn't wait for the item to settle.)
