3 ms·
lots of phones have barometric sensors that can be used for more accurate elevation differences. sadly it seems to be a "premium" feature and i can't find it in
by kkarakk 8y ago
lots of phones have barometric sensors that can be used for more accurate elevation differences. sadly it seems to be a "premium" feature and i can't find it in any phone <300 dollars in price
https://ieeexplore.ieee.org/document/6817923 https://ieeexplore.ieee.org/document/6817923
- hasperdi 8y agoThose sensors you are referring to are not reliable enough to tell elevation accurately. In addition to that, buildings may have different pressure to the outside
- kkarakk 8y agoi have successfully told the difference between the ground and 3rd floor with a galaxy note 3's barometric sensor(for triggering home routines only when actually at home vs just arriving at the location) maybe that was just a particularly good sensor...
- londons_explore 8y agoThey are sufficient if you have other phones in the same vicinity at known locations. If bobs phone is 10 meters higher than alex's phone, and they're in a 2 floor building, bob must be on the top floor and alex on the bottom. This principle can be used at scale by people like apple and google.
- BenjiWiebe 8y agoMy 2013 Moto X has a barometric sensor. When graphing the raw sensor output, I can see a ~6ft elevation change with little difficulty.