Which retail innovation was directly developed from military logistics systems used during World War II?

Throughout military history, wartime demands have often accelerated retail innovations that later became mainstream. From rationing systems to supply chain management, the pressures of equipping armed forces and maintaining civilian morale have transformed how products are sold, displayed, and distributed. This poll tests your knowledge of how military necessities shaped modern retail practices that we now take for granted in civilian commerce.

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Self-checkout technology
Standardized barcodes and universal product codes (UPC)
Digital payment terminals
Customer loyalty programs