Which product innovation, first implemented in an Ohio supermarket in 1974, revolutionized retail inventory management and is considered one of the most significant retail technologies of the 20th century?

Throughout history, certain product innovations have fundamentally transformed the retail landscape. Some inventions revolutionized how stores operate, how consumers shop, and even shaped entire business models. This poll tests your knowledge about a pivotal retail technology that altered the course of shopping history and created the foundation for modern retail operations we take for granted today.

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The UPC barcode scanner system
The electronic cash register (ECR)
The shopping cart with built-in calculator
The magnetic anti-theft security tag