Pretty Face, Ugly War, Brilliant Hack

During World War II, actress Hedy Lamarr and composer George Antheil developed a patented “Secret Communication System” that used synchronized frequency hopping to make radio-guided weapons harder to detect and jam. Their idea tackled a real wartime vulnerability by asking the engineer’s question: how do you keep a signal from being killed?

The Navy didn’t adopt their design as-is and Lamarr didn’t literally invent Wi‑Fi, but the episode shows how her technical curiosity and wartime urgency helped advance the early concepts of spread‑spectrum communication—an overlooked contribution finally acknowledged decades later.