When was the first self-checkout system patented, marking the beginning of a new era in retail technology?

Self-checkout technology revolutionized the retail experience by empowering customers and streamlining operations. This innovation has transformed how we shop, reducing wait times and changing staffing models across the industry. Test your knowledge about this significant retail technology milestone that continues to evolve with advancements in AI, computer vision, and contactless payments.

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1984 (by David R. Humble at CheckRobot)
1992 (by IBM's Retail Solutions Division)
1977 (by NCR Corporation)
2001 (by Fujitsu's Retail Technology Group)