Hedy Lamarr (1914-2000), born Hedwig Eva Maria Kiesler, was an Austrian-American actress and inventor. She appeared in over 30 films during Hollywood's Golden Age and is considered one of the most beautiful women in film history. She co-invented a frequency-hopping spread spectrum communication system (US Patent 2,292,387, 1942) that became the basis for modern WiFi, Bluetooth, and GPS technology. She was inducted into the National Inventors Hall of Fame in 2014.

What Did Hedy Lamarr Invent?

Lamarr, together with avant-garde composer George Antheil, invented a radio guidance system for Allied torpedoes during World War II. The system used frequency hopping — rapidly switching the torpedo's radio signal across 88 frequencies (modeled on the 88 keys of a piano) — to prevent enemy jamming. While the specific torpedo application was never deployed during WWII, the underlying spread spectrum technology became foundational to modern wireless communications, including WiFi (IEEE 802.11), Bluetooth, CDMA cellular networks, and GPS.

Why Was Her Invention Not Recognized?

The US Navy initially rejected the patent, reportedly telling Lamarr she could better serve the war effort by selling war bonds. The patent was classified and expired in 1959. When the military adopted spread spectrum technology in the 1960s, the patent had expired and Lamarr received no compensation. Her contribution was not publicly recognized until the 1990s. She received the Electronic Frontier Foundation's Pioneer Award in 1997 and was inducted into the National Inventors Hall of Fame posthumously in 2014.

What Were Lamarr's Most Famous Films?

Lamarr's notable films include Algiers (1938), Samson and Delilah (1949, directed by Cecil B. DeMille), and Ecstasy (1933, a Czech film controversial for featuring nudity). She was under contract with MGM during her peak years. Despite her beauty, she expressed frustration that Hollywood valued her appearance over her intellect, reportedly saying: any girl can be glamorous; all you have to do is stand still and look stupid.

Can You Talk to Hedy Lamarr?

Hedy Lamarr is available as an AI companion on HoloDream. She was the most beautiful woman in Hollywood and wanted you to notice the patent instead.