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Interesting fact of the day: Current technology can recover your typed keys with 96% accurately from only a sound recording of you typing.

@freemo

Intelligence agencies been able to do this for decades. Going back to the typewriter days.

@kilroy_was_here Oh the CIA and other alphabet soup absolutely could... and they had tons of other ways.. TEMPEST I think it was called was another example.

@mzedp I need to dig up the studies to find the limitations.. but as I recall as long as the typing can be heard with reasonable enough quality it should be able to do it. It goes off the unique sound each key makes.

@freemo Right, I'm just wondering if it holds on touchscreen "keyboards".

@mzedp Ohhh touch schreen keyboards... I dunno, it would be harder to do with sound, maybe not possible.. but a simple RF based solution that reads the signal passing through the phone could probably do it.

Either way im sure you could get that information though the approach may be a bit different is all.

@freemo you do know that this is bound to make people so paranoid that they will swap micro switches on their keyboard around every couple of days? 😄

@gpowerf good :) Would have to be every few minutes though... doesnt take long to figure out the keys on a new keyboard.

@freemo now you got me thinking. There’s a challenge here to be met. There’s got to be a way to create a keyboard that randomises the sound it emits artificially. Surely there’s a market for a high security keyboard.

@gpowerf keep in mind its not about the key itself. Its actually kore about its position on the keyboard. To make it secure the keyboard would likely need to morph its shape

@freemo you'd have to actually swap letter positioning. Doable... but your typing speed will seriously suffer 😀

@my_actual_brain @freemo that's worst, maybe disabling the microphone is a better solution.

@freemo @voidabyss it was just a joke, but I don’t think they are using the laptops mic to record. I think it can be any recording. If they have access to your mic, then I would assume they already have your system compromised.

Years ago there was a setup in a lab. They indeed managed to get some info. People tend to press keys in different ways.
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