Which retail data analytics innovation, invented in the 1990s, revolutionized personalized marketing by tracking and analyzing individual customer purchase histories across multiple shopping trips?

The retail landscape has been transformed by numerous inventions and discoveries throughout history. From barcode scanners to recommendation algorithms, technological innovations have revolutionized how products are marketed, sold, and analyzed. This trivia question focuses on a pivotal retail analytics breakthrough that fundamentally changed how businesses understand consumer behavior and make data-driven decisions. Test your knowledge of the inventions that shaped modern retail analytics!

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Customer Loyalty Cards with unique identifiers
RFID (Radio-Frequency Identification) product tracking
Electronic Point of Sale (EPOS) systems
Market Basket Analysis algorithms