They might know where you are, but as more of what we do moves online, and with the technology I’ve described, I believe that less and less they’ll have any way of knowing what you’re doing. Much of that will result from an increasing portion of our data being distributed and encrypted. The result will be that individual IoT devices might have some info on me, but assembling large, meaningful pictures from metadata — which is, for instance, what the NSA was up to — will become more difficult, if not impossible.