Invented frequency-hopping spread-spectrum technology, a forerunner of WiFi and CDMA, to to prevent jamming of radio-guided missile signals and facilitate top-secret wartime communication during WWII, all while being a Hollywood starlet. Other applications include cellphones (Sprint and Verizon’s wireless technology is based on this system) and wireless telemetry applications to monitor vital signs of patients without interference from other medical devices in the intensive care unit. (Hedy Kiesler Markey, better known as Hedy Lamarr)
