Kek, anon used to visit that site alot. Wondering if OP was talking to the clerk and their voice logged in some AI voice recognition, via the clerk's phone, who was simultaneously scanning their purchases and it connected that way. If they used a club card then that's how it happened.
Does any anon know the Q post where they described the tech for surveilling each person? It's like Google Earth and you just click on a person's dot and it zooms into all that person's online data, which is massive.