Yeah, I got excited when I read "bluetooth proximity marketing" because I was hoping that with a few weekends I could start tricking stores into thinking that everyone I ever bump into just walked into the store with me.

However, google returns a bunch of results talking about the stores sending the customer data. And not the other way around. Also the customer needs a specific app.

It doesn't sound like anyone is tracking anyone via bluetooth. At the very least, if they are, then "bluetooth proximity marketing" is the wrong keyword to search for.