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Meet Hedy Lamarr—an actress, a visionary, and one of history's most overlooked inventors. During World War II, while the world watched her films, Hedy was secretly revolutionizing technology. She patented frequency-hopping spread spectrum: a groundbreaking technology that allowed military signals to hop randomly across frequencies, making them impossible to jam or intercept. It was brilliant. Radical. Decades ahead of its time. But here's the kicker—nobody realized her invention's true power until decades later. The same technology that protected military communications became the foundation for Bluetooth and WiFi. Every wireless device you use today, from your phone to your headphones, owes a debt to Hedy's genius. Hedy was proof that brilliance doesn't fit in a box. She was a performer AND an engineer. A visionary who proved that your greatest invention might just change the world—even if nobody notices until you're gone.