Which retailer first implemented the now-ubiquitous 'scan-and-go' technology allowing customers to scan items with their smartphones while shopping and skip traditional checkout lines?

The retail landscape has been transformed by technological innovations that changed how we shop. From self-checkout systems to advanced customer tracking, retail giants have invested billions in developing technologies that enhance the shopping experience while increasing operational efficiency. Test your knowledge of which major retailers pioneered some of the most influential retail innovations that are now industry standards.

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Walmart with 'Scan & Go' (2013)
Sam's Club with 'Scan & Go' (2016)
Stop & Shop with 'Scan It!' (2007)
Amazon with 'Amazon Go' technology (2016)