How has airport security and all security changed since 9/11?

Question

How has airport security and all security changed since 9/11?

Answer 1

Speaking as a Canadian, now we need a passport to fly into the US;  I have had pens taken away:  I have had to remove my shoes; we have to put cigs and lighters in baggies; we can't take regular sized toothpaste in carryons; and for a  while we couldn't take bottled water on but I think that has been lifted.  No big deal really.

Answer 2

The Filipinos at the gate learned a few more words in English

Answer 3

Repetitive inspections are instituted in airports since 9/11 and it is the reason that many travelers tend to be naked to avoid being subjected to many inspections.