Electronics Pioneers & History
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 Hedy Lamarr was an Austrian-American actress and inventor who co-invented a
technology known as spread spectrum communications, which is now widely used in
modern communication systems such as Wi-Fi, Bluetooth, and cell phones.
Lamarr, along with her collaborator George Antheil, developed the technology
during World War II as a means of creating secure and unjammable radio
communications for torpedoes. Their invention involved using a frequency-hopping
signal that rapidly switched between different radio frequencies, making it
difficult for enemies to intercept or jam the signal.
In 1942, Lamarr and Antheil were granted a U.S. patent (2,292,387, granted on
August 11, 1942) for their invention,
which they called the "Secret Communication System." However, the technology was
not immediately adopted by the military, and it was not until many years later
that spread spectrum technology became widely used in civilian applications.
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