Which company introduced the first modern electronic customer loyalty program in 1981, revolutionizing how retailers tracked and rewarded customer purchases?

Customer loyalty programs have become a cornerstone of modern retail strategy, but their origins stretch back further than many realize. These programs evolved from simple trading stamps to sophisticated digital ecosystems that track consumer behavior and preferences. This trivia question explores a pivotal moment in the history of retail loyalty programs that changed how businesses approach customer retention and data collection.

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American Airlines with AAdvantage
Sperry & Hutchinson with S&H Green Stamps
Sears with the Discover Card rewards program
McDonald's with their Collector Cups promotion