Hedy Lamarr developed a frequency-hopping idea that served as a basis for modern spread-spectrum communication technology, such as Bluetooth, COFDM (used in Wi-Fi network connections), and CDMA (used in some cordless and wireless telephones). Durum , which employed the techniques in the autonomous control of torpedoes.
Hedy Lamarr~actress and mathematically talented, Lamarr also co-invented — with composer George Antheil — an early technique for spread spectrum communications and frequency hopping, necessary for wireless communication from the pre-computer age to the present day.
Hedy Lamarr in 'Ecstasy' (1933). The film became notorious for showing Lamarr's face in the throes of orgasm as well as close-up and brief nude scenes in which she is seen swimming and running through the woods.