Which payment technology innovation, first widely adopted in the 1950s, revolutionized retail by allowing customers to make purchases without carrying cash?

The way we pay for products has undergone dramatic transformation throughout history. From bartering to cryptocurrency, payment innovations have revolutionized retail experiences. This poll tests your knowledge of a pivotal moment in payment technology that fundamentally changed how consumers interact with retailers and shaped modern commerce. Do you know which groundbreaking payment invention created a seismic shift in retail operations?

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The universal product code (UPC) barcode system
The magnetic stripe credit card (developed by IBM)
The ATM (Automated Teller Machine)
The electronic cash register with digital receipt printing