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vwb2022 t1_ja9ljuv wrote

Reply to comment by aspheric_cow in Magnetic pole reversal by Gopokes91

Yes, modern devices use a magnetometer to determine the direction of the North. But with a GPS you know your location relative to the magnetic pole and you can determine your direction of travel using the magnetometer and software to correct the magnetic pole drift. So GPS can tell tell you your direction of travel, albeit indirectly by correcting for your position relative to the drifting magnetic pole.