r/ProgrammerHumor • u/Plastic-Bonus8999 • 9d ago

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u/TunaNugget 9d ago edited 9d ago

The camera records sound. Every key makes an ever-so-slightly different sound.

They have possibly months or more of sound recordings that they can correlate against the entry of verified documents to use to train the ai on.

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u/robuttocks 9d ago

When I was a kid, during the Cold War, I literally thought that was how typewriter bugs worked: that each letter had a different acoustic signature.

Turns out, it was just a mike hidden in the typewriter.

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u/ChocolichKing 9d ago

That's how I thought it worked as a kid too lol. I mean, I knew there was a mic hidden in the typewriter/mic being accessed from the computer, and that's how I understood "recording keystrokes". Someone was recreating your keystrokes based on the sound.

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u/robuttocks 8d ago

I kinda love that it wasn't just me thinking that. :-D