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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Posting a link to a website containing tracking isn't great, if contents of the website are behind a paywall maybe copy them into the post
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If you have a question, please try searching for previous discussions, maybe it has already been answered
Reposts are fine, but should have at least a couple of weeks in between so that the post can reach a new audience
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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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[–] crapwittyname@lemm.ee 6 points 1 year ago* (last edited 1 year ago) (1 children)

I think your fag packet calculation has got a power of ten wrong somewhere. Wi-fi is GHz so that would be on the order of centimetres I think.

[–] Turun@feddit.de 4 points 1 year ago (2 children)

Yes. Wifi is 2.4 GHz, speed of light is 0.3 Gm/s. Therefore one wavelength is 0.3/2.4 m/s/Hz = 12.5 cm

[–] crapwittyname@lemm.ee 1 points 1 year ago

Or 0.001 football pitches

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

Yeah, you’re right. Writing it smaller than 12.5 cm should do it, which is entirely reasonable.