Her name is Hedy Lamarr

Austrian and then American film actress and inventor, popular in the 1930s-1940s.

Her story is one of those that would have sparked an accusation of implausibility. Just imagine: a mysterious Hollywood star from Europe and an avant-garde composer (George Antail) together come up with a new way to encode signals that prevents them from jamming.

Lamarr, whose film career continued after World War II, not only saved many ships of the US Navy from enemy torpedoes (her technology was rediscovered and began to be widely used already in the 1960s, starting with the Cuban Missile Crisis), but also became the progenitor of Wi-Fi standards and Bluetooth.