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Comment by ghshephard | Hacker News Reader

It's an excellent question if people pay attention - the question, (at least as asked in Singapore), is, "Did you pack your own luggage, are you aware of everything in it, has anyone given you anything to place in your luggage, and has your luggage been under your control/observation the entire time."

Every time they ask me that question - I do a quick mental checklist, always mention that my luggage did leave my control when placed in the boot of the cab - which they always understand is an acceptable loss of control.

There are a couple alternatives that one could take to further increase security - first, presume that 100% of people are threats, and do a full security scan, and hand check/rejection, of 100% of checked luggage. Likewise, enhance the carry-on security check, and further restrict what people can carry-on. In particular, shift the carry-on check to the gate (where it should be).

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>Every time they ask me that question - I do a quick mental checklist, always mention that my luggage did leave my control when placed in the boot of the cab - which they always understand is an acceptable loss of control.

I'd bet that a fair number of the people who thoughtfully answer that question give an answer that is calculated to produce the least amount of hassle for themselves, even if they know that their luggage could have potentially been tampered with. Most people probably aren't aware enough of their surroundings to give an informed answer. I'd like to know out of the number of extra checks that have been initiated due to this question, how many have yielded anything useful.

It also has the peripheral advantage of ensuring that you never carry a package for someone else, and that you are leery about carrying luggage/bags packed by someone else.

Really? I would have no problem bringing a wrapped gift from a friend or colleague, the contents of which I do not know on a plane. And lying about packing my bags myself.

In fact, I don't see why anyone would have a problem with that...it's a constant and (imo) fair assumption of mine that my friends are not trying to kill me.

Heh. I had a moment of sudden panic when a security agent at Ben Gurion airport in Tel Aviv asked me if I had packed everything myself, and I remembered I had a http://en.wikipedia.org/wiki/Rosh_Hashanah gift from a client in my case. So I said 'No.'

Then, with images of airport holding cells and enhanced interrogation jumping to mind, I hastily explained what I meant. Interestingly, the agent was happy not to unwrap and open the present, and just inspected the rest of the contents...

The list of things you are nkt allowed to take over a border is very much greater than "things that will kill someone or destroy a plane".

Carrying eg an apple into the US is probably not going to be fun if they find it.

As someone else has noted, the set of things that won't harm you, aren't necessarily the same set of things that you are allowed to carry on a plane (leatherman), or check (LiOn batteries).

Also - while you can be trusted to make judgements about your own safety, the airlines have to make somewhat more conservative decisions about the safety of everyone else on the plane.

And carrying packages for someone else is just one of likely hundreds (thousands?) of factors that they are concerned about.

This doesn't guarantee airplane safety (Nothing ever will), but it reduces the number of easy attacks one can make, such that it's becoming somewhat more difficult for a passenger to bring down the plane they are flying on now. Of course, now we have to worry about the pilots (a thankfully rather rare vector)

The airlines don't care if you are carrying a package for someone else. Although if a stranger asks you to carry a package, then it is suspicious. But these questions don't really do anything to reduce the attack surface.

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