Hedy Lamarr

Sixteen year old Hedy Lamarr (Hedwig Eva Maria Kiesler) photographed by Trude Fleischmann in Vienna, 1930.

Beside her acting career from Vienna, through Berlin, Paris and finally to Hollywood, Lamarr and composer George Antheil developed a radio guidance system for Allied torpedoes at the beginning of World War II, which used spread spectrum and frequency hopping technology to defeat the threat of jamming. The principles of their work are now incorporated into modern Wi-Fi, CDMA and Bluetooth technology.