Hedy Lamarr’s Secret Patent: The Wartime Idea Behind Modern Wi-Fi

The room was dim, curtains half-drawn against the California sun. A piano sat against one wall. On a nearby table, sheets of technical sketches lay scattered beside film scripts. Hedy Lamarr, one of Hollywood’s most recognizable faces, leaned over a page filled not with dialogue, but with diagrams of radio signals and mechanical switching systems. This was not a publicity stunt. This was not a hobby for press interviews. It was an idea meant for war. And decades later, versions of that idea would quietly shape how billions of devices connect to the internet. A Movie Star with an Engineer’s Curiosity Hedy Lamarr was internationally famous in the 1940s. She was also intensely interested in how things worked. Long before…