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Austrian-born American actress and inventor Hedy Lamarr died #OTD in 2000.
Lamarr wanted to aid the Allied forces during World War II. She shared her concept for using βfrequency hoppingβ with the U.S. Navy and codeveloped a patent with Antheil 1941. Today, her innovation helped make possible a wide range of wireless communications technologies, including Wi-Fi, GPS, and Bluetooth.
Below, U.S. patent 2,292,387 granted on August 11, 1942, under her legal name Hedy Kiesler Markey.
U.S. patent 2,292,387 granted on August 11, 1942, under her legal name Hedy Kiesler Markey.
H04L9/38 - Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers
Subject-matter directed to cryptographic mechanisms involving encryption effected by mechanical apparatus, as rotating cams, switches or key-tape punchers.
https://patents.google.com/patent/US2292387
Hedy Lamarr publicity photo for the film The Heavenly Body, 1944
This is a publicity photo taken to promote an actress. As stated by film production expert Eve Light Honthaner in The Complete Film Production Handbook, (Focal Press, 2001 p. 211.)