The space a person inhabits is an inanimate object.
Whether a space is occupied or not is an observation of the space. What an inhabited space looks like is an observation of both the space and its occupants.
So is my analytics engine merely observing inanimate electrons that have been launched apriori by an occupant, but which do not constitute the actions of the occupant-in-itself or the tracking-in-itself.
Sorry, but I can't find any other response to what you said there.
If a person is the subject of your tracking, then you need that person's consent.
If an inanimate object is the subject of your tracking, then you likely in the clear.
The caveat is that if you track a person via your tracking of inanimate objects, then you better have that person's consent.