Which technology innovation first allowed retailers to automatically capture product information during checkout, revolutionizing inventory management and retail analytics?

Modern retail has been transformed by technology, particularly at the checkout counter. Point of Sale (POS) systems have evolved from simple cash registers to sophisticated hubs that manage inventory, customer data, and even marketing campaigns. This trivia question tests your knowledge about a pivotal innovation in POS technology that changed how retailers operate and collect customer insights.

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Universal Product Code (UPC) barcode scanning, first implemented commercially at Marsh Supermarket in 1974
Radio-Frequency Identification (RFID) tags, first implemented at Walmart distribution centers in 1991
Near Field Communication (NFC) payment processing, first deployed by American Express in 1997
Magnetic stripe reader technology, first integrated into IBM's retail systems in 1969