Your WiFi. Your Bluetooth. Your GPS. The wireless communication technology that runs almost everything in your life right now.
A Hollywood actress invented the foundational concept behind all of it in 1942. Her name was Hedy Lamarr. And almost nobody knows who she was.
Who Hedy Lamarr Was
Hedy Lamarr was an Austrian-American actress who was one of the biggest film stars in Hollywood during the 1940s. She was also an inventor who taught herself engineering and spent her free time working on technical problems.
During World War Two she became concerned about the vulnerability of radio-guided torpedoes to signal jamming by the enemy. If an enemy could jam the frequency controlling a torpedo they could redirect it or neutralize it entirely.
She developed a solution. Working with composer George Antheil she invented a system called frequency hopping spread spectrum. The idea was that a signal could rapidly hop between different frequencies in a coordinated pattern that would be almost impossible to jam because an enemy would not know which frequency to block.
She and Antheil patented the invention in 1942 and donated the patent to the US government for use in the war effort.
What Happened to the Invention
The US Navy did not use it. They dismissed it and put it in a file.
The patent expired in 1959 before it was ever used commercially. Hedy Lamarr received nothing for it.
In the 1980s engineers working on wireless communication and spread spectrum technology developed systems that used the same basic principles she had patented decades earlier. That technology became the foundation for WiFi, Bluetooth, GPS, and most modern wireless communication.
By the time the world began to recognize what she had done she was elderly and largely forgotten as both an actress and an inventor. She received a technical honor from an electronics engineers association in 1997. She died in 2000.
She was never compensated for the technology that now underlies a multi trillion dollar global wireless communications industry.
Why History Forgot Her
The pattern is one we have seen before. A woman made a significant contribution. Men in the field did not take it seriously at the time. The patent expired. Others built on the work later without crediting the original inventor. And the history books wrote about the men who commercialized the technology rather than the woman who invented the concept.
There are hundreds of stories like Hedy Lamarr's. Women who made foundational contributions to science, technology, medicine, and engineering who were ignored, uncredited, or deliberately written out of the record.
Every time we recover one of these stories it makes the picture of history more accurate and more complete.
Your phone works because of something a Hollywood actress figured out during World War Two. That is true. And it is remarkable. And it should be in the history books.
Robert Lee Beers III is a writer and digital preservation advocate based in North Charleston South Carolina.
