Watch How a Hacker’s Infrared Laser Can Spy on Your Laptop’s Keystrokes
www.wired.com
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Hacker Samy Kamkar is debuting his own open source version of a laser microphone—a spy tool that can invisibly pick up the sounds inside your home through a window, and even the text you’re typing.
HubertManne
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43M

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.

Hello_there
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13M

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

HubertManne
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13M

yeah I encountered it when looking at infrared for another convo in the thread. its uvb for what we think of as glass. the clear stuff. which is what causes sunburns and the transition lenses to activate.

Sneezycat
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23M

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

HubertManne
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73M

if this yahoo from the internet I found in a search is right then its both:

“Glass will bock low frequency IR (red hot), but allow the passage of high frequency (white hot) IR. Hence, the heat of the sun will easily pass into a greenhouse, but once this energy is converted into low frequency heat by the objects within that absorb it, then the resulting low frequency heat is trapped. Hence, the Greenhouse Effect.”

Sneezycat
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33M

That makes a lot of sense, thanks for doing the homework!

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