Which retail technology innovation, introduced in the 1970s, fundamentally changed shopping by enabling automated price lookup and inventory tracking at checkout?

The retail landscape has evolved dramatically throughout history, with technological innovations and changing consumer behaviors shaping how we shop. From ancient marketplaces to modern e-commerce giants, retail has always been at the intersection of commerce, technology, and social trends. This trivia question explores a pivotal moment in retail history that forever changed shopping habits and established a new paradigm in how consumers interact with products.

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Universal Product Code (UPC) barcode scanning
Electronic credit card terminals
Computerized cash registers
Digital price displays