How Promo Codes Went Digital: The Tech Behind Online Discounts in 2026
A discount used to be something you could hold. Asa Candler, who gained sole ownership of Coca-Cola in 1891, promoted the drink by handing out thousands of coupons for a complimentary glass. Canadian Tire introduced its own paper coupons at its gas bars in 1958, moved them onto genuine bank-note paper in 1961 and still […]
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