Which early point-of-sale innovation, introduced in 1879, became known as the 'Incorruptible Cashier' and revolutionized retail transactions?

The way we pay for goods has transformed dramatically throughout history. From ancient marketplaces to digital transactions, point-of-sale systems have evolved to meet the changing needs of commerce. This trivia question tests your knowledge about a pivotal moment in retail payment technology that changed how businesses processed transactions forever.

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• The cash register, invented by James Ritty
• The credit card imprinter, created by Frank McNamara
• The mechanical calculator, developed by William Burroughs
• The check verification system, pioneered by John Patterson

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