When was the first self-service checkout system patented, marking a pivotal moment in retail innovation?

The way we shop has been transformed by countless innovations throughout history. One particular technology revolutionized the retail customer experience by allowing shoppers to scan and pay for their items without cashier assistance. This invention significantly changed store layouts, customer flow, and staffing requirements across the retail industry. Test your knowledge about this game-changing retail innovation that continues to evolve today with newer technologies like computer vision and AI.

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1984, by David R. Humble at RCA
1992, by Howard Schneider, forming the basis for Optimal Robotics' systems
1997, by IBM's retail division as part of their 'Store of the Future' initiative
2001, by NCR Corporation under the 'FastLane' product name