this post was submitted on 12 May 2026
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The Walls Don’t Have Ears, But Fiber Optic Does (hackaday.com)
submitted 8 hours ago by Gsus4@mander.xyz to c/technology@lemmy.world
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[–] MonkderVierte@lemmy.zip 24 points 7 hours ago* (last edited 7 hours ago) (1 children)

Besides, if researchers can do this successfully, you would imagine three-letter agencies around the world could do it even better.

You can't just listen to a random fiber on the switch. You'd have to prepare a piece carefully and add the measuring system, by which point a micro is easier and smaller.

[–] gedaliyah@lemmy.world 20 points 5 hours ago

Yeah, it basically says, "researchers could potentially measure vibrations in the air to detect speech."

I know. That's how speech works.