"Silver Screen superstar Hedy Lamarr (born Hedwig Kiesler Markey) with the help of composer George Antheil invented a secret communication system in an effort to help the allies defeat the Germans in World War II. The invention, patented in 1941, manipulated radio frequencies between transmission and reception to develop an unbreakable code so that top-secret messages could not be intercepted. The technology called spread spectrum, now takes on many forms. However, all the spread spectrum that we use today directly or indirectly, flows from the invention created by Hedy Lamarr."
“When movie stars weren’t stupid”