Which retail payment innovation was first introduced by IBM in 1973 that revolutionized checkout efficiency and inventory management?

The way we pay for products has evolved dramatically over the decades. From manual cash registers to contactless payments, retail payment innovations have transformed the shopping experience. This poll tests your knowledge about a pivotal invention in retail payment history that changed how businesses process transactions and track inventory. Do you know which technology revolutionized checkout procedures worldwide?

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Universal Product Code (UPC) barcode scanning system
Electronic signature capture pad
PIN-based debit card system
Magnetic stripe card reader