Which inventor created the first self-checkout system (called 'Automated Checkout Machine') in 1992, revolutionizing retail customer experience?

The retail landscape has been transformed by numerous inventions designed to enhance customer experience. One of the most significant innovations in recent decades has been the self-checkout system. This technology changed how customers interact with retail environments, creating a more autonomous shopping experience while addressing labor challenges for retailers. Test your knowledge about this revolutionary retail invention that bridged traditional shopping with the digital age.

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• Dr. Howard Graham, working at NCR Corporation
• David R. Humble, inspired while waiting in a long grocery store line
• Margaret Wilson, a former IBM engineer and retail consultant
• Yoshiyuki Takahashi, while developing systems for 7-Eleven Japan

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