The technology to convert wifi signals into the placement and identity of people is getting much better. Not by using their devices, just the waves bouncing of their bodies. (There’s nothing new to the pipeline as far as I can tell, we’re just starting to get into the accuracy ranges that make it easy/useful.)
I’m concerned and pissed off about both
The more channels they have as data source, the more resilient and finer-grained their intel.
Rage, rage against the dying of the privacy