Interesting read Mr Roberts and some what scary!
The ever more popular “wearable” tech is just starting to scratch more of the surface.
This bio info coupled with the ever increasing social info will be extremely valuable to corporations, insurance companies, health organisations (a more beneficial use), governments, military and even dare I say it terrorist groups. As you said the uses are endless and scary.
My view is I’m happy the way this is going but agree with the fact I would like control. To block some of the groups above (I think you know the ones). To give some of the info freely like health organisations and other public services maybe. To even charge for the data – why the hell not hey?