Not that you're wrong, but there's definitely a huge perceptual difference when one method is done visually and another is done anonymously. Amazon Go's system

Not that you're wrong, but there's definitely a huge perceptual difference when one method is done visually and another is done anonymously. Amazon Go's system knows who I am, what item I grab off the shelf, put back and then what I ultimately leave with. There's so much personal information they gather from that order and it shows up downstream across their other products. Bluetooth tracking can't attach a face to that and that is a far more appropriate use of tracking. It aids restocking decisions, promotions, etc, that I have no problem participating in. My point is, if I like a particular item, I don't mind the store knowing that and keeping it stocked, and paired with other items I buy together with it. I just don't want the store to know my emotional state, confusion, and speed at which I grabbed an item.