Which company invented and installed the first commercial self-checkout system in retail stores in 1992?

The retail landscape has been transformed by numerous technological inventions that changed how we shop. Among these innovations, self-checkout systems represented a significant shift in the customer experience and store operations. This trivia question explores the origins of a technology that has become ubiquitous in modern retail environments, testing your knowledge of retail technology advancement history.

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IBM with their 'FastLane' system
NCR Corporation with their 'CheckRobot' system
Fujitsu with their 'U-Scan' technology
Wincor Nixdorf with their 'ExpressPOS' solution