Which groundbreaking invention first enabled retailers to automatically collect detailed data about purchased products, revolutionizing retail analytics?

Modern retail has been transformed by technological innovations that changed how businesses understand consumer behavior. This poll explores a pivotal moment in retail data analytics history that revolutionized how companies track and analyze shopping patterns. Test your knowledge about the technological breakthroughs that shaped today's retail landscape and gave birth to the data-driven decision making we now take for granted.

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• The Universal Product Code (UPC) barcode system, first commercially used in 1974
• The electronic cash register (ECR) system, pioneered by IBM in 1964
• RFID (Radio-Frequency Identification) tags, first deployed in retail in 1989
• The magnetic strip loyalty card, introduced by American Airlines in 1981

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