Privacy

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A place to discuss privacy and freedom in the digital world.

Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.

In this community everyone is welcome to post links and discuss topics related to privacy.

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"Wiffract" Wi-Fi method can read letters through walls (www.techspot.com)

submitted 1 year ago by abobla@lemm.ee to c/privacy@lemmy.ml

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[–] Hamartiogonic@sopuli.xyz 1 points 1 year ago

It’s all about the size. You can’t use an optical microscope to look at details smaller than the wavelength of visible light. You need an electron microscope for that. Similarly, a wifi camera can’t see details smaller that the wavelength.

If you made a camera that can see in 100 MHz radio waves, you could probably see mountains, rivers and houses, but anything smaller than 3 m would be nothing but blur.