Which retail payment innovation was first introduced by IBM in 1973 and fundamentally transformed how consumers purchased products?

The way we pay for products has transformed dramatically over the decades. From cash to contactless, payment innovations have revolutionized the retail experience and consumer behavior. This trivia tests your knowledge about a pivotal moment in payment system evolution that changed retail forever. Do you know your payment history well enough to identify when and how one of the most significant payment technologies emerged?

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Electronic barcode scanning at checkout
The magnetic stripe credit card
The ATM (Automated Teller Machine)
The electronic cash register (ECR)