Which company first introduced and widely implemented self-checkout technology in retail stores?

Self-checkout technology revolutionized the retail experience, allowing customers to scan and pay for items without cashier assistance. This innovation changed store layouts, customer flow, staffing models, and shopping behavior. Test your knowledge about this significant retail technology advancement that transformed how we shop and continues to evolve with AI and computer vision integration.

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IBM (developed the first commercially successful self-checkout system called 'CheckRobot' in the 1990s)
NCR Corporation (created and implemented the first widely adopted self-checkout systems in the late 1990s)
Fujitsu (pioneered touch-screen self-service kiosks for retail in 1995)
Amazon (developed the first modern self-checkout technology with their Amazon Go stores)