Hedy Lamarr

Hedy Lamarr

1914-2000

Actress and inventor behind Wi-Fi

Published: September 16, 2025

Hedy Lamarr

Did you know a glamorous Hollywood movie star helped create technology that makes Wi‑Fi possible? Hedy Lamarr (born Hedwig Kiesler) was a famous actress in the 1930s and 1940s — beautiful on screen and curious off it. Today we’ll focus on her secret superpower: she loved solving puzzles and used that curiosity to invent things.

Hedy Lamarr

During World War II she worried about radios being jammed. Hedy teamed up with composer George Antheil and they invented "frequency hopping" — a clever way for radio signals to jump between channels so enemies couldn’t block them. They even used ideas from piano player rolls to keep the jumping in sync, like two people clapping the same rhythm so the message stays on beat.

Hedy Lamarr

They patented the idea in 1941, but it wasn’t used right away. Later, scientists used the same thinking to build secure wireless systems, so Hedy’s idea helped make Bluetooth, Wi‑Fi and safer cellphone signals possible. Her story shows that being famous for one thing doesn’t stop you from doing something different — curiosity and creativity can change the world. Next time you use wireless music or games, remember the movie star who danced the airwaves into a new future!

Frequently Asked Questions

What was Hedy Lamarr's birth name and origin?

She was born Hedwig Kiesler in Vienna, then part of Austria-Hungary, on November 9, 1914.

Did she have formal training as an inventor or engineer?

No — Hedy had no formal engineering degree. She was largely self-taught, curious, and used practical problem‑solving and collaboration to develop ideas.

Was she honored for her inventions while alive?

Not much at first. Her ideas weren’t adopted during WWII and she earned little money. Later she received recognition, including an EFF Pioneer Award (1997).

Has she received posthumous recognition?

Yes. Hedy Lamarr has since been celebrated widely, including induction into the National Inventors Hall of Fame (2014) and renewed public interest.

Did she invent other devices besides her famous idea?

She sketched and proposed several household and practical improvements during her life, though none achieved the same historical impact as her radio work.

How many times was she married?

Hedy Lamarr was married six times over her life. Her personal life often attracted public attention separate from her work.

Did she profit from her patent?

No. Her patent was not widely used during its term, so she did not gain significant financial reward from the idea in her lifetime.

Are there films or books about her life?

Yes. Her story has inspired biographies and documentaries, including the 2017 film 'Bombshell: The Hedy Lamarr Story,' which explores her dual life as star and inventor.