Which retail analytics innovation, first implemented in the 1970s, revolutionized customer purchase tracking and is considered the foundation of modern retail data analytics?

The retail industry underwent a significant transformation when companies began using data to understand customer behavior. One particular innovation changed how retailers analyze customer purchase patterns forever, creating a new era of targeted marketing and personalized shopping experiences. This discovery fundamentally altered how retailers understand their customers and make inventory decisions. Test your knowledge about this pivotal moment in retail analytics history!

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Universal Product Code (UPC) barcode scanning
Radio-frequency identification (RFID) tags
Customer loyalty cards
Electronic point-of-sale (EPOS) terminals