Earlier quoted context omitted.
> Also I’m not sure there’s a lot of difference in loss of privacy and tapping or swiping a credit card. Well for one thing, at least in my experience, most credit card transaction data does not include granular information about the transaction (like the list of groceries you bought).
> Well for one thing, at least in my experience, most credit card transaction data does not include granular information about the transaction (like the list of groceries you bought). No, that information is collected as part of the "points" discount card and then sold to advertisers together with your credit card transation data.
Also, I know an engineer that was inside a monstrous grocery chain many years back. Back then the payment and loyalty systems were separated by technical measures and firing level policies. If you used a CC without a points card they were not able to associate it to any kind of account.
Obviously the CC processor could but they didn’t get a list of purchases.