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WMC-TV News in Memphis, Tennessee, reports on new technology introduced by Kroger to prevent what is called “coupon stacking,” or the combination of a paper coupon with an electronic coupon to get a lower price on a single item.

According to the story, “Kroger did not have a good way of monitoring that the customer was using two coupons on the same item. But on March 21, new software was downloaded on all store registers which now rejects a second coupon for the exact same item purchased, eliminating the ability to stack coupons.”
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