In which year was the world's first handheld self-scanning system for retail customers introduced, revolutionizing the in-store shopping experience?

The way we shop has transformed dramatically over the decades, with technological innovations continuously reshaping the retail experience. One significant breakthrough that changed how customers interact with stores was the introduction of self-scanning technology. This innovation reduced checkout times, gave customers more control over their shopping experience, and paved the way for the self-checkout systems we see today. But do you know when and where this retail revolution first began?

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1992, by Safeway in California
1986, by ICA supermarket in Sweden
1998, by Walmart in Arkansas
2001, by Tesco in the United Kingdom