Which company introduced the first commercial self-checkout system in retail stores in 1992?

Self-checkout technology has dramatically transformed the retail landscape over the past few decades. What began as an experiment in efficiency has become a standard feature in many retail environments, changing how consumers interact with stores and how retailers manage their workforce and operations. This trivia question explores the historical development of a technology that millions of shoppers use daily but may know little about.

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IBM (International Business Machines)
NCR Corporation (National Cash Register)
Fujitsu
Walmart's internal technology division