On: Show HN: Give 7B people an instant physical addres...

[tgb]

Most lat/long data isn't specified relative to the earth's core but to a reference, such as the North American tectonic plate, as in the NAD83 standard for exactly this reason. https://en.m.wikipedia.org/wiki/North_American_Datum

[7952 → tgb]

GPS coordinates change depending on continental drift (they are fixed in space). You need updateable parameters to transform to something like NAD83.