Dual mode RFID product tags, which function on both UHF and NFC frequencies, are employed in a product data management system. The UHF component provides electronic article surveillance and inventory management functionality and is disabled at the point of purchase. The NFC component functions, in conjunction with a potential customer's NFC reader, to obtain pre-purchase product information prior to selection for purchase and after purchase, for obtaining post -purchase functionality, such as, merchant or manufacturer incentive loyalty reward points, product warranty registration, etc.
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