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

The way we shop has transformed dramatically in recent decades, with technology streamlining the customer experience at every touchpoint. One innovation that fundamentally changed retail operations was the introduction of self-checkout systems. These machines shifted the final transaction responsibility from employees to customers, promising shorter lines and reduced labor costs. But do you know when this retail revolution began? Test your knowledge of retail innovation history!

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1992 (by Howard Schneider at Price Chopper supermarket)
1980 (by IBM at Winn-Dixie stores)
2001 (by NCR Corporation at Walmart)
1974 (by Sears as 'Customer Checkout Terminals')