In which year was the first commercial mechanical cash register invented, laying the foundation for modern Point of Sale (POS) systems?

Modern retail wouldn't be the same without Point of Sale (POS) systems - those sophisticated cash registers and transaction systems we see everywhere today. But these technological marvels have deep historical roots. This poll explores when the first mechanical cash register (the precursor to modern POS systems) was invented, revolutionizing how merchants tracked sales and prevented employee theft. Test your knowledge of retail technology history!

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1879, by James Ritty, a saloon owner frustrated by employee theft
1902, by John Patterson after founding the National Cash Register Company
1857, by Benjamin Franklin's grandson as an extension of his grandfather's inventions
1891, by William Burroughs, who later established the Burroughs Adding Machine Company