Which invention from the 1970s is credited with revolutionizing market research by enabling the first electronic collection of consumer purchase data?

Market research has evolved dramatically through technological breakthroughs and methodological innovations. Before modern analytics and digital tools, companies relied on rudimentary methods to understand consumer behavior. This trivia question focuses on a pivotal invention that transformed how businesses collect and analyze customer data, forever changing the landscape of market intelligence and product development. Test your knowledge about this revolutionary discovery!

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Universal Product Code (UPC) barcode scanning system
ARPANET electronic messaging (early email)
IBM's first personal computer
Sony Walkman portable audio device