Which groundbreaking retail payment invention, first demonstrated in 1973, used a primitive barcode system and laid the foundation for modern point-of-sale scanning technology?

The way we pay for goods has transformed dramatically over the decades. From cash to cards to contactless methods, retail payment systems represent some of the most impactful technological innovations in commerce. This trivia question explores a pivotal moment in payment technology that forever changed how we shop. Test your knowledge about the invention that bridged traditional retail with the digital age!

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IBM's Universal Product Code (UPC) scanner system
NCR's electronic cash register with magnetic card reader
Diebold's automated teller interface terminal
Fujitsu's digital payment processing unit