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Does anyone have a Faraday bag for phone that works?
(lemmy.dbzer0.com)
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this post was submitted on 17 Aug 2025
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Privacy
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Yes, GPS works by measuring your distance from several GPS satellites (based on the timing of the signals they send). If a few distances are known, it narrows it down to a point (the satellite orbits are known so you know where they are at any time).
I've owned several stand-alone GPS receivers before phones started to include the feature.
You can download offline maps to phones so that you can navigate without any phone signal.