Come on everyone, put your thinking caps on. The only reason for a store to go to the cards is profit, yes? NO! These cards also allow them to track every penny you spend, on what, for how much etc. They are SPY cards, tracking YOU, completely without your permission. Retailers make Big bucks on shelf placement for many products in their stores, now they make even more big bucks by selling YOUR information, your shopping habits, spending, etc., again without your permission and without sharing those profits with you. Ask where you use your cards and the answer is usually that they use the information for inventory and re-ordering purposes. That is a partial answer only. Specifically ask at the customer counter if they are tracking and selling your shopping information, what information, and where does it go to. SURPRISE!