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cmdrfred | karma 1797 | avg karma 0.87
2016-12-01 12:48:25
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Maybe they are using GPS as a compass?
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FireBeyond | karma 18718 | avg karma 2.51
2016-12-01 19:01:31+00:00
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This. Many mobile, or even vehicle (GPS) compasses are not magnetic at all, but are doing point to point math on your GPS coordinates to "determine" your compass heading.
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