Which of these retail innovations, first widely implemented in the 1970s, revolutionized inventory management and created the foundation for modern checkout systems worldwide?

The retail landscape has been transformed by numerous inventions and discoveries over the decades. From payment systems to inventory management, these innovations have revolutionized how we shop and how retailers operate. This trivia question challenges your knowledge about a pivotal technology that fundamentally altered the retail experience worldwide and created new consumer trends. Can you identify which groundbreaking innovation truly changed the face of retail?

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Universal Product Code (UPC) barcode scanning
Electronic Funds Transfer at Point of Sale (EFTPOS)
Radio-frequency identification (RFID) tags
Self-service checkout kiosks