Which retail payment innovation was first introduced by IBM in 1973 and fundamentally transformed how stores process transactions?

The way we pay for goods has transformed dramatically over the decades. From cash registers to contactless payments, retail payment systems have evolved to meet consumer demands for speed, security, and convenience. This trivia question explores a pivotal innovation in retail payment history that changed how businesses process transactions and paved the way for modern commerce. Test your knowledge about this revolutionary retail payment milestone!

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Universal Product Code (UPC) barcode scanning system
PIN-based debit card transaction processing
Electronic Funds Transfer at Point of Sale (EFTPOS)
Near Field Communication (NFC) payment technology