I think this is good but I also fear it might let people feel more comfortable about tracking then they should. As I type this I can open up WIGLE or a multitude of other apps and see if my roommate is home just by looking for his devices BT signals. We leak a lot of data and now people are more generally aware of the possibility of tracking someone and not needing James bond esque tech. A motivated person could easily put two and two together and devise a way to keep tabs on someone with no tags required. Obviously HN will be more aware of this in general but I wish more people would take note of tracking in general and ask if they're okay with automatic plate readers, ubiquitous video surveillance or the multitude of ways a retailer can track your habits in (and out of) stores.