This would prevent precise triangulation of the stationary targets, but still leaks potentially unacceptable amount of information. Imagine an attacker who mapp

This would prevent precise triangulation of the stationary targets, but still leaks potentially unacceptable amount of information. Imagine an attacker who mapped out all of the cells. This is not too hard as you see close/far shifts when you cross cell boundaries. Now place a device monitoring people nearby in each cell. This allows you to geotag people to the cell and monitor their movements. If you cross correlate with other tracking services (such as cell phone tracking datasets) you will be able to identify the individual pretty quickly. For the above to work tracking does not have to be continuous. As long as a person sometimes is trackable you will accumulate information that allows for cross correlation. With intermittent tracking it would just take a lot longer.