Which technology innovation first allowed Point of Sale systems to scan product information automatically, drastically reducing checkout times and revolutionizing retail inventory management?

Point of Sale (POS) systems have transformed dramatically over the decades, evolving from simple cash registers to sophisticated commerce platforms that integrate inventory management, customer data, and omnichannel capabilities. This trivia question tests your knowledge about a pivotal innovation in POS history that revolutionized retail transaction processing and set the stage for modern systems we use today.

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The Universal Product Code (UPC) barcode system, introduced commercially in 1974
The magnetic stripe card reader, popularized in the 1960s
The electronic cash register with digital display, introduced by NCR in 1982
The touchscreen interface POS terminal, first deployed widely in 1990