This sort of search doesn't bother me all that much. There are only a rare set of circumstances where being close to a particular cell tower is incriminating.

This sort of search doesn't bother me all that much. There are only a rare set of circumstances where being close to a particular cell tower is incriminating. Furthermore, since moving from cell tower to cell tower requires moving in public, this information could be gathered just as easily by security cameras/license plate scanners, which seem to me to be more invasive, but legal.