Amazon fresh does seem quite revolutionary, but the whole shop has lots of cameras which track anything you pick up, and then charge you when you leave, so anything you touch is added to your cart. I've read a few reviews of it and apparently just putting your hand close to it and inspecting it adds it to your cart, and the process of removing it from your cart requires the app, or you have to call customer service and have it refunded. If you check something for allergen/nutritional advice you have to do the whole process again. Additionally, the card readers often tend to overcharge (read the reviews, it's very common).
I do think this will succeed because high street shops are dying out and a trillion dollar company can afford to have their supermarket be a failure and keep running it, but, as the
BBC article states, this is on the verge of 'Big Brother shopping'. I'd like Bezos and co. to stay in the world of online delivery and useless products I don't need.