A computerized enhanced discreet coupon (EDC) processing system processes shopper EDC(s) using a scanner and a processor. The scanner scans purchased items. The processor generates tickets corresponding to the purchased items, syntactically validates shopper EDC(s), semantically checks the EDC(s), and authenticates the EDC(s). If an EDC is authentic, then the processor compares the EDC against the ticket to determine if the EDC qualifies, and if so, then the EDC is redeemable. Authentication can be accomplished by, for example, comparing EDC rule(s) and/or rule identifier(s) against genuine rule/identifier sets. Genuine rule set includes a qualifying rule and a redemption rule.