These methods work by turning the shopper into a cashier. Amazon go completely removes the cashier role from the experience, the shopper just picks up the item

These methods work by turning the shopper into a cashier. Amazon go completely removes the cashier role from the experience, the shopper just picks up the item as they did before and walks out. Using vision to solve a problem always seems inefficient but it scales out way better than anything else (ie the various ways google maps uses vision when in a world with perfect map data it wouldn’t be needed).