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Open source laser microphone picks up laptop keystrokes(www.wired.com)

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communism@lemmy.ml
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akwd169@sh.itjust.works
31 points

demonstrating that he can point a laser that’s invisible to the human eye at a faraway laptop, through a window, and detect the computer’s vibrations to reconstruct virtually every character typed on it

Infrared is not visible

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Hello_there@fedia.io
10 points

It is visible to security cameras

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akwd169@sh.itjust.works
1 point

Ahh ok, that’s what you meant before I guess

Since that function is usually meant for night vision, I wonder how well a security camera can pick out the laser during the day i.e. when the IR sensors are being swamped by daylight also coming in through the window

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Sneezycat@sopuli.xyz
3 points

Infrared doesn’t pass through windows.

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HubertManne@moist.catsweat.com
3 points

actually thats UV. transition lenses won’t change with a glass window thats not open. infrared is basically heat and does indeed pass through. Cars in the sun would not get hot so fast if they did not let in infrared.

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Sneezycat@sopuli.xyz
2 points

I have an IR camera and windows look like mirrors. Might depend on the type of glass idk.

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Hello_there@fedia.io
1 point

Some UV is blocked by glass. Either UVA or UVB. It doesn’t block both.

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akwd169@sh.itjust.works
1 point

I’m not going to argue with you but you should read the article perhaps? It’s pretty specific about where the laser is aimed vis a vis windows and whatnot

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EarthShipTechIntern@lemm.ee
1 point

Infrared is not visible

To humans

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