award points directly into the credit card

the problem with retailers' cards is that each retailer awards its own card and people end up carrying too many of them. since every retailer accepts credit cards, credit card companies should allow for an additional magnetic bar or chip to be added at the back of the credit card that will store any and all retailer's points (gas station, supermarket, groceries, malls, airlines etc). swipe the card once so that the scanner reads the balance and gives the discount, swipe it once again to make payment.

http://www.thinkaloo.com