If you know Hedy Lamarr as only an actress, you're missing her true genius. She was also an inventor, co-developing which of the following technologies during World War II?

Lamarr's radio guidance system, developed along with composer George Antheil, used a technology known as "frequency-hopping spread spectrum". The technology was designed for Allied torpedoes, and eventually became the basis for the Bluetooth technology that we all know and love today.

Asked by Tom Cohen · Last updated 4 years ago · 5.5K views