I've been using the same un-registered Smith's (Kroger by another name) card for 5 years now. I get gas points and everything. Now, do they know a lot about me based on my credit card? Yes, but it's a start...
I have one of those too.. but only used cash with it. I have heard that if you use that and a CC or debit card they link the data - even if just once - and can link the past data as well.
I also have my wifi turned on my phone so they can't correlate the 'burner card' with that.. if I don't have cash I use a different discount card.
Of course if they scan the face and correlate that way - meh. For that reason I only use cash at Target - but not sure how long that will be enough to keep from data points being put together there or anywhere at this rate.
Of course if they scan the face and correlate that way - meh. For that reason I only use cash at Target - but not sure how long that will be enough to keep from data points being put together there or anywhere at this rate.