That's not the sort of thing I meant to refer to. In fact, the massive increase in monitoring private phone conversations, etc. led to a massive increase in unconnected info. Very confusing.
What I was referring to was some sort of technology that would allow, say, non-confrontational airport 'scans'. Stealthy and subtle, but comprehensive and effective.
It isn't, generally.
Well, that's what the thread is about. Currently, there doesn't seem to be any way to provide adequate security that isn't, at least somewhat, confrontational, intrusive, and generally uncomfortable for lots of 'innocent' people -- unless 'profiling' is done. But then, what will the 'profiling' be based on?