Which retail technology innovation was invented first and revolutionized the accuracy of merchant transactions?

Throughout history, certain inventions have fundamentally transformed the retail customer journey. From the humble beginnings of simple cash registers to today's advanced AI-powered shopping experiences, these discoveries have shaped how we buy and sell goods. Test your knowledge about the pivotal moments in retail technology history that changed shopping forever!

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Barcode scanner (1974)
Mechanical cash register (1879)
Electronic point-of-sale system (1973)
Self-checkout kiosk (1992)