Which retail invention, patented in 1952, was first used commercially in 1974 on a pack of Wrigley's gum and is now scanned over 6 billion times daily worldwide?

The retail landscape has been transformed by numerous innovations throughout history. From the humble cash register to sophisticated AI-powered shopping experiences, these inventions have revolutionized how we buy and sell products. This poll tests your knowledge about a pivotal retail technology that fundamentally altered the shopping experience worldwide and continues to impact billions of transactions daily.

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Universal Product Code (UPC) barcode
RFID tag (Radio-Frequency Identification)
Electronic article surveillance (EAS) tag
Near-field communication (NFC) chip