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It was Hedy Lamarr, "Godmother of the Cellphone."

Lamarr and composer George Antheil developed a secret communication system intended to make it harder for the enemy to detect or jam radio-guided torpedoes.

The system used slotted paper rolls similar to player-piano rolls to synchronize the frequency changes in transmitter and receiver. It also would have utilized 88 frequencies, exactly the number of keys on a full-size piano.

Lamarr & Antheil received US Patent 2,292,387 on August 11, 1942; they immediately and voluntarily handed the patent over to the US Military to be used as it pleased.

The concept saw its first wide scale use in military operations in 1962. Today, the frequency-hopping idea is still widely used in military communications as well as cordless phones, cellular phones, and WiFi networks.

Hedy Lamarr received recognition for her pioneering work in 1997 when the Electronic Frontier Foundation presented her with a special award at the 6th Annual Pioneer Awards.

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