Amazon’s, ” Just walk out technology”

Amazon’s, ” Just walk out technology.” Now in The bay area too. Amazon Go cashier-free store could be headed to SF’s Union Square.
Amazon opened its first convenience store in Seattle, billing it as the first cashier-less shop in the world. Not only aren’t their cashiers, there aren’t even checkout counters no checkout lines.
But what if we don’t want that stuff or kids put stuff in the bag without telling us.
What about the return policy.