Which retail innovation, invented in 1974 by Norman Joseph Woodland and Bernard Silver, revolutionized inventory tracking and is now used in virtually every retail store worldwide?

Test your knowledge about groundbreaking retail innovations that changed how we shop! Throughout history, certain retail innovations have fundamentally transformed the shopping experience and created entirely new markets. This question focuses on a pivotal invention that revolutionized the consumer experience in physical stores and created an entirely new approach to product distribution and sales. Can you identify this game-changing retail technology?

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The barcode scanner/UPC system
The electronic cash register (ECR)
The shopping cart with integrated scanner
The automated checkout kiosk