Interesting comment by Edward Hasbrouck about the collection of data on where everyone travels, especially the collection of air-travel data. He sees the US, and especially people living in New York City (media) and Washington D.C. (government), as collectively suffering from post-traumatic stress disorder after 9/11. The Travel Panopticon is the core of that response to 9/11/2001. Our first response was panic, leading to investigation: integrated databases, etc. Now we’re entering second phase of PTSD: trama, leading us to go from investigation into surveillance. Our main thrust is explicit prohibition of anonymous travel, and by that act to enforce the non-transportation of undesirables.
This sort of panic explains for why we require all sorts of inconvenient and sometimes dangerous privacy-violations when it comes to travel, even though it doesn’t make us more secure. As Bruce Schneier points out, asking for ID before you get on a plane not only doesn’t stop terrorists (unless we can convince them to put “terrorist” on their cards) but it doesn’t even keep people from passing tickets on to someone else. When you’re in a state of panic, it doesn’t matter if something is sensible — you just want to be doing something, anything.