Which of these retail innovations was first invented by Norman Joseph Woodland and Bernard Silver in 1952, but wasn't successfully implemented in stores until the 1970s?

The retail landscape has been transformed by numerous technological breakthroughs and innovations over the decades. From humble beginnings to sophisticated systems we use today, certain inventions have revolutionized how we shop. This trivia question focuses on a pivotal retail technology innovation that fundamentally changed the shopping experience worldwide and spawned numerous related technologies we now take for granted.

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• The barcode/UPC scanning system
• Self-checkout kiosks
• Electronic anti-theft tags
• Contactless payment terminals

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