In what year was the world's first self-checkout system patented, marking a pivotal moment in retail innovation?

The retail landscape has been transformed by numerous technological innovations aimed at improving efficiency and customer experience. One of the most impactful developments in retail operations was the introduction of self-checkout technology, which fundamentally changed how customers complete their shopping journey. This invention reduced wait times, provided customers with more control, and allowed retailers to reallocate staff to other customer service areas. Test your knowledge about this significant retail technology milestone!

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1984 by David R. Humble of CheckRobot Inc.
1992 by Howard Schneider, who implemented the first working system at a Price Chopper supermarket
1997 by James Goodwin at IBM's retail division
2001 by Amazon's early retail technology team