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

The retail landscape has been transformed by technological innovations that enhance customer experience and streamline operations. One of the most significant advancements in recent decades has been self-checkout technology, which fundamentally changed how customers complete their shopping journey. Test your knowledge about this retail technology milestone that reshaped the customer experience and store operations worldwide.

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IBM (with its 'Shopping Buddy' system in 1998)
NCR Corporation (with its 'CheckRobot' system in 1992)
Fujitsu (with its 'U-Scan' technology in 1995)
Amazon (with early prototype systems in 1997)