Which innovation, first widely adopted in the 1970s, revolutionized retail point of sale systems by allowing electronic price lookup and inventory tracking for the first time?

Before digital registers and touchscreens transformed retail, point of sale systems underwent a fascinating evolution. The technological advancement of these systems fundamentally changed how merchants tracked inventory, processed transactions, and understood customer behavior. This trivia question explores a pivotal moment in retail technology history that set the foundation for today's sophisticated POS systems. Test your knowledge about when and how modern retail checkout was revolutionized!

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• The Universal Product Code (UPC) barcode system
• The NCR Class 5 mechanical cash register
• IBM's magnetic stripe card reader technology
• The Diebold TABS (Total Automatic Banking System) terminal

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