Which retail invention, first implemented in 1974 at an Ohio Marsh supermarket, used a Universal Product Code (UPC) to revolutionize checkout efficiency?

The history of retail is filled with groundbreaking inventions that transformed how we shop. Some innovations that seemed revolutionary initially failed spectacularly, while others permanently changed the retail landscape. This poll tests your knowledge about a significant retail technology breakthrough that altered the shopping experience forever and created an entirely new standard for retail efficiency.

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The barcode scanner, which reduced checkout times by 40% and enabled automated inventory tracking
The electronic point-of-sale system (EPOS), which eliminated manual cash registers and paper receipts
The automated shopping cart return system, which used magnetic locking mechanisms to organize carts
The electronic anti-theft tag system, which reduced shoplifting by 35% in its first year