Which company invented and installed the world's first commercially successful self-checkout system in 1992?

The retail landscape has been transformed by countless innovations throughout history. One such game-changer was the introduction of self-checkout technology, which fundamentally altered how consumers complete their shopping transactions. This technology represents a fascinating intersection of consumer psychology, technological advancement, and retail efficiency. Test your knowledge about this important retail innovation that we now take for granted!

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IBM (International Business Machines)
NCR Corporation (formerly National Cash Register)
Fujitsu
Wincor Nixdorf (now Diebold Nixdorf)