The question is what the non-crime use case is. I can't think of such a thing. In any event, having your phone in an uber with a bunch of other phones and not following "normal" uber ride patterns would be yet another detectable pattern.

Yes, that model would be detectable, what does that get anyone though?

I found flaws with a lot of models, whether it was greater vulnerability of not getting your phone back, or having too many other phones in the same place.

I decided that more phones in the same and route was more tolerable.

But any model I didnt think of I’d like to read it.

> The question is what the non-crime use case is.

To protect against a tyrannical government.

In the case of a tyrannical government, it would be easy to detect use of this service and the tyrannical government would have an easy way of identifying "enemies of the state."

Of course. All privacy is like that. All encryptions is like that.