Which company invented and implemented the world's first self-checkout system in retail stores?

Self-checkout technology revolutionized the retail experience by empowering customers to scan and pay for items without cashier assistance. This innovation has dramatically transformed store operations, customer flow, and labor allocation across the retail landscape. Test your knowledge about this pivotal retail technology that changed shopping forever!

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IBM with their 'FastLane' system in 1998
David R. Humble with the 'CheckRobot' system in 1984
NCR Corporation with their 'Express Checkout' in 1992
Fujitsu with their 'U-Scan' technology in 1989