At the beginning of World War II, Lamarr and composer George Antheil developed a radio guidance system using frequency-hopping spread spectrum technology for Allied torpedoes, intended to defeat the threat of jamming by the Axis powers. She also helped improve aircraft aerodynamics for Howard Hughes while they dated during the war. Although the US Navy did not adopt Lamarr and Antheil's invention until 1957, various spread-spectrum techniques are incorporated into Bluetooth technology and are similar to methods used in legacy versions of Wi-Fi. Recognition of the value of their work resulted in the pair being posthumously inducted into the National Inventors Hall of Fame in 2014.