I don't remember the thread where we were talking about a cashless society. I found this today, 'Being cash-free puts us at risk of attack': Swedes turn against cashlessness. No cash == no privacy, since every transaction is traced. If Law Enforcement knows you spent $53.07 at Kroger yesterday, they can go to Kroger and find out what you purchased. If you used your Shoppers Card, they can see your whole buying pattern. Of course, cash and your Shoppers Card is almost as bad. Unless they get video of you at the checkout making the cash purchase, it is plausible deniability that "an unauthorized person used my Shoppers Card."