In 1941 Heddy Lamarr, considered one of Hollywood’s greatest actresses, patented her invention of frequency hopping, which is used today for secure transmission, GPS, WiFi and Bluetooth.
Heddy Lamar

In 1941 Heddy Lamarr, considered one of Hollywood’s greatest actresses, patented her invention of frequency hopping, which is used today for secure transmission, GPS, WiFi and Bluetooth.