Which of these retail technologies was first invented by James Ritty in 1879 after he observed ship propeller counting mechanisms during an ocean voyage?

Throughout history, retail has been transformed by groundbreaking inventions that forever changed how we shop. From simple mechanisms to sophisticated digital systems, these innovations revolutionized the customer experience and business operations. This trivia challenges your knowledge about a pivotal invention that fundamentally changed retail operations and is now ubiquitous in stores worldwide. Test your understanding of retail technology history!

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The cash register (originally called 'Ritty's Incorruptible Cashier')
The barcode scanner (initially developed as a railroad tracking system)
The electronic credit card reader (first tested in New York department stores)
The automated inventory management system (inspired by factory production lines)