Which company invented and installed the world's first self-checkout system in a retail store in 1992?

The retail landscape has been transformed by numerous technological innovations over the decades. One particular advancement changed how we complete our shopping transactions forever, eliminating the need for human cashiers in many scenarios. This innovation represented a significant shift in retail operations, customer experience, and store employment patterns. Test your knowledge about this retail technology milestone that has become ubiquitous in modern stores worldwide.

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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 'EasyPoint' terminals