Big Data World and Real_ID
The disappearance of Malaysia Airlines Flight 370 under mysterious and suspicious circumstances is likely to accelerate the collection of detailed information on virtually everybody on the planet. Two or perhaps more of the passengers appear to have been travelling with stolen identification documents.
In an age when governments and corporations can collect detailed information on every chat, tweet, email or facebook post, it should not escape anybody's notice that it would be far easier to construct a database of everybody on the planet, or at least everyone who wished to travel by any kind of public conveyance, and check that identification biometrically anytime anybody boarded or sought to board any such public conveyance.
Intrusive? Yes - but hardly more so than global collection of all those conversations.