I have no idea if this happens or not, but I imagine it is trivial to monitor bluetooth and wifi beacon probes to identify all people who walk into a physical s

I have no idea if this happens or not, but I imagine it is trivial to monitor bluetooth and wifi beacon probes to identify all people who walk into a physical space. Similarly, I have no idea if it is possible but I imagine it is trivial to link purchases, especially if they require showing a membership card, with identity, and feed all that into a CRM / customer identity database. It'd be kinda silly to run a large scale retail operation without doing these things, honestly. The chicken / hot dog reference is to a USA based "big box" store that sells these things (meat products) at cost / loss as a form of advertising to get customers in the door. That chain also requires that people be "members" of the club prior to letting them in the store.