In 1943, actress and inventor Hedy Lamarr, along with composer George Antheil, co-invented a technology called frequency-hopping spread spectrum. This innovation aimed to prevent jamming of radio signals, enhancing the security of radio-guided torpedoes. Despite its potential, the U.S. Navy sidelined the technology, considering it impractical, delaying advancements in secure communications. Lamarr's scientific contributions were overshadowed by her acting career, leaving her technological legacy initially unrecognized.