Which invention, first commercially used in 1974 on a pack of Wrigley's chewing gum, revolutionized retail inventory management by allowing automated product identification?

The world of retail has been transformed by numerous technological innovations throughout history. One particular invention revolutionized inventory management and dramatically increased checkout efficiency across the globe. Test your knowledge about this game-changing retail technology that fundamentally altered how products are tracked and sold.

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• The Universal Product Code (UPC) barcode
• The magnetic stripe card reader
• The electronic cash register (ECR)
• The RFID tag system

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