Which retail innovation, invented by Norman Joseph Woodland and Bernard Silver in 1952, was first used commercially by a grocery store in 1974 and now processes trillions of dollars in transactions annually?

The world of retail has been transformed by numerous technological innovations throughout history. Some inventions have fundamentally changed how we shop, while others have revolutionized how retailers operate behind the scenes. This question focuses on a groundbreaking retail technology that transformed commerce worldwide and continues to evolve today.

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• The barcode/UPC scanning system
• The electronic cash register (ECR)
• The self-checkout kiosk
• The electronic anti-theft tag system

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