Which retail technology invention, first patented in 1949 but not commercially successful until the 1970s, revolutionized inventory management and is now scanned over 6 billion times daily worldwide?

In the world of retail, technological innovations have repeatedly transformed how we shop. From humble beginnings to sophisticated systems, retail tech has evolved dramatically over decades. This poll tests your knowledge about a pivotal invention that revolutionized inventory management and checkout processes worldwide, fundamentally changing retail operations and consumer experiences. Can you identify this game-changing technology?

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RFID (Radio-Frequency Identification) tags
The barcode (Universal Product Code)
Electronic shelf labels (ESLs)
Point-of-Sale (POS) touch screen systems