Kroger has recently updated their POS system to prevent coupon fraud. This new enhancement checks for multiple coupons being redeemed for a single product. Consumers can now only use one coupon per product purchased."In the past, Kroger customers could use or "stack" an electronic coupon with a paper coupon for the same item. They could use both because Kroger did not have a good way of monitoring that the customer was using two coupons on the same item."
This upgrade gives Kroger the means to tighten coupon use to the limit terms printed on most coupons.
http://www.wmctv.com/story/14344597/kroger
