Which invention revolutionized retail marketing by enabling the first comprehensive tracking of consumer shopping patterns and psychology in the 1970s?

The retail landscape has been transformed by psychological insights that revolutionized how companies market products. Behind many familiar shopping experiences lies fascinating research and groundbreaking discoveries. This poll tests your knowledge about a pivotal invention that changed how retailers understand and influence consumer behavior. Do you know which technological innovation fundamentally altered how brands track and respond to customer psychology?

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Universal Product Code (UPC) barcode scanner
Electronic point-of-sale (EPOS) customer loyalty card
Radio-frequency identification (RFID) inventory tags
Psychographic consumer segmentation software