Hedy Lamarr was a Hollywood movie star whose true genius was found in her workshop. During World War II, she co-invented a 'frequency hopping' system to prevent radio-controlled torpedoes from being jammed by the enemy. By rapidly switching frequencies in a synchronized pattern, the signal became nearly impossible to intercept. Although the Navy did not use it during the war, the principles of her invention became the foundational technology for modern spread-spectrum communications, including Wi-Fi, Bluetooth, and GPS. Lamarr was a self-taught inventor who spent her nights tinkering with everything from improved traffic lights to soluble bouillon cubes, often stating that 'Inventions are easy for me to do.'