Which early retail innovation is considered the first modern point-of-sale system, patented in 1879 by James Ritty?

Point of Sale (POS) systems have transformed retail throughout history. From manual cash registers to sophisticated digital interfaces, these systems reflect changing technology and consumer expectations. This trivia question explores a pivotal moment in retail history that revolutionized how merchants processed transactions and managed inventory. Test your knowledge about the evolution of retail technology that laid the foundation for today's seamless checkout experiences.

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The Incorruptible Cashier (mechanical cash register)
The Tabulating Machine (punch card system)
The Comptometer (key-driven calculator)
The Analytical Engine (mechanical computer)