Which revolutionary product, introduced in 1974, became the world's first commercial barcode scanner point of sale system?

The modern retail landscape has been transformed by technological advancements in point of sale systems. From simple cash registers to sophisticated integrated systems, these innovations have revolutionized how businesses process transactions and manage inventory. This trivia question focuses on a pivotal moment in POS history that changed retail forever. Test your knowledge about this groundbreaking technology that we now take for granted!

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IBM's 3660 Supermarket System
NCR's 255 Electronic Cash Register
Fujitsu's G-880 Optical Scanner
Casio's EX-1 Digital Register