Which retail technology innovation, introduced in 1974, fundamentally transformed checkout systems and is considered one of the most important developments in retail history?

The history of retail technology has transformed how we shop and how merchants sell. From manual cash registers to AI-powered recommendations, technological advancements have revolutionized commerce throughout history. This trivia question explores a pivotal moment in retail technology that changed shopping forever. Test your knowledge of how technology has shaped retail history!

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The barcode scanner, first used commercially at a Marsh Supermarket in Ohio on a pack of Wrigley's gum
The electronic cash register with digital display, first implemented by McDonald's restaurants
The magnetic stripe credit card reader, first deployed by Bank of America in California stores
The electronic anti-theft security tag system, first used by Macy's department store