> how fast you drive, even if you don't have a smart car, because your phone contains an accelerometer Any car 2010 and later "smart/stupid": https://www.busin

> how fast you drive, even if you don't have a smart car, because your phone contains an accelerometer Any car 2010 and later "smart/stupid": https://www.businessinsider.com/ford-exec-gps-2014-1 https://www.businessinsider.com/ford-exec-gps-2014-1, so even if you leave your phone at home, don't assume that you aren't tracked.