In which year was the world's first self-checkout system patented, marking a revolutionary change in retail operations?

The retail landscape has been transformed by numerous technological inventions over the decades. One of the most impactful innovations that changed how consumers interact with stores is the self-checkout system. This invention represented a significant shift in retail operations and consumer autonomy. Test your knowledge about this retail technology breakthrough that has now become commonplace in stores worldwide.

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1984
1992
1997
2001