The Beep That Changed the World (And Took 25 Years to Happen)

You've heard it thousands of times. That short, clean beep at the checkout. You don't think about it. Nobody does. But that beep took 25 years to happen. It started with a graduate student drawing lines in the sand on a beach in 1948 — and ended with a pack of Wrigley's chewing gum in a supermarket in Ohio in 1974. The gum is now in the Smithsonian. Not because of what it was, but because of how it was purchased. This is the full story of the barcode: why the idea sat unused for two decades, what technology finally made it possible, and how a coordination problem between thousands of companies almost killed it before it started. Today, 10 billion barcodes are scanned every day. It started with a guy playing in the sand.