One potential marketing strategy using QR codes could be to include them on all print advertisements, such as billboards or magazine ads. When scanned, the QR code could direct consumers to a landing page on the company's website where they can access exclusive deals or promotions. Additionally, the company could offer a loyalty program where customers can earn rewards for scanning QR codes at various locations or events. These rewards could include discounts or free products. The company can also track how many people scanned the QR code and how many people redeemed the offer, giving them an insight on how effective the strategy was.