Which major retailer was the first to implement barcode scanning at checkout in all of its stores?

The retail landscape has been transformed by technological innovations that changed how we shop. Behind many of these innovations are forward-thinking companies that took risks to revolutionize the consumer experience. This trivia question tests your knowledge of which major retailer was the first to implement a particularly significant innovation that we now take for granted in modern shopping.

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Kroger
Walmart
Sears
Target