In what year was the world's first self-checkout system installed in a retail store?

Self-checkout systems revolutionized the retail experience by giving customers more control over their shopping journey. These systems reduce wait times, allow for more private transactions, and help retailers optimize their workforce. However, the path to widespread adoption wasn't immediate. This poll tests your knowledge about when this significant retail innovation first appeared in stores, forever changing the customer checkout experience.

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1992 (Price Chopper supermarket in New York)
1984 (Walmart's experimental store in Arkansas)
2001 (Target's flagship store in Minneapolis)
1978 (Safeway's innovation center in California)