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Hedi Lemarr / Hedy Lemarr
Hedy Lamarr (1914 -2000) was an Austrian-born American actress, inventor, and film producer. She is hailed as the inventor who pioneered the technology that would one day form the basis for today's WiFi, GPS, and Bluetooth communication systems.She appeared in 30 films over a 28-year career in Europe and the United States, and co-invented an early version of frequency-hopping spread spectrum communication, originally intended for torpedo guidance.