Which retail innovation from the 1970s is widely considered the foundation of modern customer purchase analytics?

Throughout history, retailers have continuously evolved how they understand their customers. From simple ledger books to sophisticated data systems, the journey of retail analytics reveals fascinating insights about consumer behavior and business innovation. This trivia question explores a pivotal moment in the development of modern retail customer analytics that changed how stores understand their shoppers.

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• The introduction of UPC barcodes and electronic scanning at checkout
• The first computerized customer loyalty program by American Airlines
• Walmart's pioneering satellite network linking all store locations
• Sears Catalog's first customer demographic questionnaire system

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