Which of these retail innovations was first introduced at a Marsh Supermarket in 1974 and is now used over 5 billion times daily worldwide?

The retail landscape has been transformed by countless inventions throughout history. Some innovations were so revolutionary that they fundamentally changed how people shop and how businesses operate. This poll tests your knowledge about a pivotal technological advancement that had profound implications for retail inventory management, pricing efficiency, and the overall shopping experience. Can you identify the groundbreaking invention that retailers first widely adopted in the 1970s and continues to shape retail operations today?

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Universal Product Code (UPC) barcode scanning
Electronic point-of-sale (EPOS) cash registers
Self-service checkout kiosks
RFID inventory tracking tags