

I can imagine this being initially an accidental discovery like oh every time so and so’s body interacts with the WiFi signal it’s the same pattern… until someone starts exploring this further… and then some engineer or their manager started looking for applications for this. In my experience engineering researchers especially are very good with coming up with use cases for whatever tech they’re working with, with little ethical consideration.
One reason, maybe not the only one, could be that they’re being told it’s all lies or in any case untrustworthy reports, or hugely exaggerated. I’ve seen many examples of this.