Which retailer was the first to implement the 'scan-and-go' mobile checkout technology that allowed customers to scan products with their smartphones while shopping?

Test your knowledge about groundbreaking retail innovations that transformed how companies connect with consumers. The retail landscape has been dramatically reshaped by technological advancements and bold business strategies over the past few decades. Some innovations were so revolutionary they fundamentally changed consumer expectations and industry standards. Can you identify which company was responsible for one of retail's most significant game-changers?

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Walmart (2012)
Amazon Go (2016)
Stop & Shop (2011)
Tesco (2013)