Which retail technology innovation, first successfully implemented in 1974 by Marsh Supermarket in Ohio, fundamentally transformed inventory tracking and checkout procedures worldwide?

Throughout history, certain retail technologies have fundamentally transformed how we shop. One innovation in particular marked a pivotal moment in retail history, drastically altering inventory management, checkout efficiency, and enabling the modern shopping experience we know today. This technology's implementation revolutionized retail operations in ways still evident in every store you visit. Test your knowledge of this landmark development that bridged traditional merchandising with the digital retail era.

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Universal Product Code (UPC) barcode scanning
Electronic point-of-sale (EPOS) terminals
Radio-frequency identification (RFID) tagging
Electronic funds transfer at point of sale (EFTPOS)