Which invention, first successfully used in retail in 1974, revolutionized checkout processes and inventory management by using parallel lines to encode product information?

The history of retail is filled with groundbreaking inventions that transformed the shopping experience. From humble beginnings to technological marvels, these discoveries have shaped consumer behavior and retail strategies worldwide. This trivia challenges you to identify a pivotal invention that revolutionized retail operations, inventory management, and pricing - fundamentally changing the customer journey in stores across the globe.

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RFID (Radio-Frequency Identification) Tags
Universal Product Code (UPC) Barcode
Electronic Price Tags
Magnetic Stripe Card Readers