https://www.amazon.com/b?node=21289116011 https://www.amazon.com/b?node=21289116011 You sign in by holding your phone with the Amazon app (QR code) up to a cam

https://www.amazon.com/b?node=21289116011 https://www.amazon.com/b?node=21289116011 You sign in by holding your phone with the Amazon app (QR code) up to a camera. Then scan every item as you place it in the cart. It has some load sensors so that it can weigh items that are sold by weight.