Re: "They checking to see if someone boarding the aircraft has malicious intent"
oh yeah like your password of "jihad" and your facebook page honoring Osama bin Laden are some kind of clue that you're a terrorist. So they look for that to keep you off of airplanes.
[seriously those wannabe types leave rat droppings all over the place, no need to use their phone passwords to spy on them like that, just do simple search engine queries and they'll pop up from time to time so you'll know who they are - use existing laws to get user info from the service providers and a warrant to spy on their activity, and you're all set]
As for the REAL terrorists and spies, they're hiding in plain site and look JUST! LIKE! EVERYBODY! ELSE! and you can't find them by insisting on getting their phones unlocked at an airport.
Next time I fly with a computer, I'll set it up with FreeBSD and I won't encrypt the hard drive. I'll just make sure that it boots into a console and that EVERY virtual console goes to a JAIL. And the root password in the jail will be something like "TSA Sucks".
[its easy to get from a jail to the host; just run ssh to localhost and log in with the host's security, then you can use 'startx' to get the GUI etc. and it'll be fine]
So [b]lame, "them" and their attempts to control and spy on us. TSA and FISA need a _BIG_ _REVIEW_ anyway, and hopefully that will be on Trump's plate in his 2nd term. Under GW Bush (whose administration invented TSA) everybody expressed their concerns that it would get "this bad", eventually. Under Obama it *DID* get "this bad". It hasn't gotten (perceptively) better under Trump, though I think to some extent it [independently] HAS gotten 'less bad'. Let's see how it goes.
Seriously I want things the way they were pre-9/11. Smarter scanning methods, and PROFILING, is more likely to get us there than the current "take of your belt and shoes and hold onto your pants so you don't flash everyone whle you're being scanned" method. And oh, by the way, give up your passwords, too.
post-note - I've been 'more thoroughly examined' at the Mexican border before, car seats removed and left for me to put back, etc. - I had a big car with a big trunk, and so they 'profiled' me for a bit of 'extra' inspection. Whatever, yeah. The agents were polite and it didn't take that long, but yeah, it was kinda 'a pain in the ass'.