Which retail technology, first commercially used in 1974 on a pack of Wrigley's gum, fundamentally transformed inventory management and checkout processes worldwide?

The retail landscape has transformed dramatically over decades through technological innovations. One particular technology revolutionized inventory management and checkout processes worldwide, changing how retailers track products and how consumers shop. Test your knowledge about this pivotal moment in retail history that bridges traditional commerce with our digital present.

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UPC Barcode scanning
Electronic Cash Register (ECR)
RFID tagging
Magnetic stripe card reader