Which mathematician's algorithm forms the foundation of modern barcode scanning systems used in retail checkout counters worldwide?

The intersection of mathematics and retail has revolutionized how we shop. From the earliest cash registers to today's AI-powered systems, mathematical algorithms have been the foundation of retail payment technologies. This poll tests your knowledge about a pivotal mathematical innovation that transformed retail checkout efficiency worldwide and continues to impact shopping experiences today.

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Claude Shannon, whose information theory algorithms enabled efficient digital encoding of product information
David Huffman, whose compression algorithm created the mathematical foundation for the Universal Product Code (UPC)
Alan Turing, whose computational model was adapted for early electronic point-of-sale systems
John Nash, whose equilibrium theory was used to optimize checkout queue efficiency