Which company introduced the world's first commercial self-checkout system in retail stores?

The retail landscape has been dramatically transformed by technological innovations that enhance customer experience and operational efficiency. Among these innovations, self-checkout technology represents one of the most visible changes in how consumers interact with retail environments. Test your knowledge about the origins of this now-ubiquitous retail technology that has fundamentally changed the shopping experience worldwide.

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IBM with its 'FastLane' system in 1998
NCR Corporation with its 'CheckRobot' system in 1992
Fujitsu with its 'U-Scan' technology in 1995
Walmart's proprietary 'ExpressLane' system in 1994