Which payment innovation, invented by IBM in the 1970s, used magnetic stripe technology and transformed retail checkout systems globally?

The retail payment landscape has been transformed by numerous inventions throughout history. These innovations have not only changed how consumers complete transactions but have fundamentally altered retail strategies and customer experiences. This poll tests your knowledge about a groundbreaking payment technology that revolutionized retail operations worldwide and set the foundation for today's digital payment ecosystem.

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Universal Product Code (UPC) barcode scanner
Electronic Funds Transfer at Point of Sale (EFTPOS)
The magnetic stripe card reader
Radio Frequency Identification (RFID) payment system