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by bmenrigh 700 days ago
5 GHz WiFi has a wavelength around 6cm so it can’t “see” anything smaller than approximately that. The things you want to see in your walls are below the diffraction limit for WiFi.
2 comments
PaulHoule 700 days ago
Imaging past the diffraction limit is possible in the near field

https://en.wikipedia.org/wiki/Diffraction-limited_system#Nea...

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p5a0u9l 700 days ago
Yes it can. Diffraction limit relates to resolution in space, not scattering.
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