3 ms·
I apologize for writing "cellphone" instead of specifically "smartphone" in my comment - I meant to say the latter. Nevertheless, what you describe sounds a lo
by jamescostian 9y ago
I apologize for writing "cellphone" instead of specifically "smartphone" in my comment - I meant to say the latter.
Nevertheless, what you describe sounds a lot like a "smartphone with location services off" (assuming you trust the smartphone)
- jacquesm 9y agoAccelerometer can do some pretty impressive dead reckoning once you have a fix. Microphones can be used for triangulation based on multiple fixes on the same sound sources (used for shot detection, but it works the other way around too). http://www.popsci.com/technology/article/2013-04/smartphone-app-locates-source-gunfire http://www.popsci.com/technology/article/2013-04/smartphone-... Smartphones can track you in a large number of ways, and you really should not trust them (esp. not if they are Android).