Which company's grocery store was the first to use a UPC barcode scanner in a commercial transaction, marking a revolutionary moment in retail innovation?

In 1973, a revolutionary invention changed the face of retail forever, making checkout lines faster and inventory management more efficient. This invention has become so ubiquitous that we barely notice it anymore, yet it represents one of the most important innovations in retail history. Test your knowledge about this transformative technology that has shaped modern shopping experiences worldwide.

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Marsh Supermarket (using an NCR scanner)
Kroger (using an IBM scanner)
A&P (using a Spectra-Physics scanner)
Walmart (using a Motorola scanner)