Once dubbed the most beautiful actress in the world, Hedy Lamarr (1914-2000) invented the frequency hopping spread spectrum that could not be tracked or jammed in 1941, which paved the way for the Bluetooth and WiFi we use today.
Lamarr, who played Delilah in Cecil B. DeMille's "Samson and Delilah (1949)", was inducted into the National Inventors Hall of Fame in 2014.
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