Which retail point-of-sale innovation was first widely adopted in supermarkets in 1974, fundamentally changing checkout efficiency?

Throughout history, retail innovations have transformed how people shop and how merchants sell their goods. From ancient bazaars to modern digital marketplaces, the evolution of point of sale systems represents one of the most significant technological shifts in commerce. This trivia question explores a pivotal moment in retail technology history that changed shopping forever.

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• The UPC barcode scanner
• The mechanical cash register
• The electronic credit card terminal
• The digital receipt printer

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