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Heathrow scraps liquid container limit

bbc.com

511–520 of 839 posts

Re: Heathrow scraps liquid container limit

#511

Earlier quoted context omitted.

>so everybody can get undressed Wait what? What are you removing? Flying in the US this week I removed nothing but a winter coat. Everything went on as normal, nothing out of bags, jut coat off.

I usually have to remove my jacket, and always the belt

The belt must be removed so that the buckle will not trigger the metal detector.

Belts with plastic buckles are normally OK without having to remove them.

Re: Heathrow scraps liquid container limit

#512

Earlier quoted context omitted.

It's easier to deport people for lying on their immigration form than for having been a member of a terrorist organization

But to prove lying you would have to prove being a terrorist anyway...

No, being a member of a “terrorist organization” and the government allows itself latitude in defining that. It’s much easier to associate someone with an organization than to show personal acts of terrorism.

Re: Heathrow scraps liquid container limit

#513
post #310

Earlier quoted context omitted.

In Zurich, you can buy Swiss army knives in the secure zone.

That's ok - 6cm blades are allowed. You can also carry it in a cabin luggage anyways. realistically any broken glass bottle can be used as a blade.

Realistically, you could bring a nub of copper or steel or antler, and your glass bottle, and knap an excellent knife in a few minutes.

Re: Heathrow scraps liquid container limit

#514
post #408

Earlier quoted context omitted.

It's easier to deal if it's in carry on bag. This is why batteries are forbidden in checked luggage. Once it all burns the airplane has got to land asap and it's an emergency. My checked luggage did not pass xray multiple times because they detected powerbanks. I had to come back and take it out. However it also did pass xray a couple times with powerbanks so it's not a reliable system.

Alternatively, I checked 3-4 20k mAh powerbanks in my luggage on my flight to Utah and it never got flagged or detected.

like yes I pointed out it doesn't always work. sometimes I don't even know if anybody is watching the screen

Re: Heathrow scraps liquid container limit

#515

Earlier quoted context omitted.

Yeah. The "security theater" absolutely does play its part in stopping attacks. Without it, airplanes would be an extremely easy target for any nutjob to commit mass murder in. They wouldn't even necessarily need a bomb, anything that can cause a big enough fire mid-flight could be potentially catastrophic. Over past few decades many airliners have crashed because out of control fire in the cabin / cargo hold. I real…

Most would-be attackers are not suicidal, I suppose. You would have to be in order to start a fire on a plane that you are on.

Most airplane attackers are, or at least since airplanes no longer take off with checked luggage from someone who hasn't boarded.

Non-suicidal hijackings have pretty much been eliminated by cockpit doors as well as 911 changing people's reactions.

Re: Heathrow scraps liquid container limit

#516

Earlier quoted context omitted.

It wasn't -- was just noting that people keep saying "MRI", when there's no 5T fields around most security checkpoints

Isn't the world of MRIs moving towards lower teslas instead of higher?

It's trying to, but "low" is still 0.5-1.5T.

Re: Heathrow scraps liquid container limit

#517

there is actually a science change that happened, and it's not (entirely) just politicians changing their mind. The big thing going from X-ray (2d) to CT (spin an X-ray machine around and take a ton of pictures to recreate a 3d image) did a lot to let security people see inside of a bag, but the hitch is that if you see a blob of gray is that water, shampoo or something else? The recent advance that is letting this h…

it has been such a godsend flying out of Frankfurt where they have the new scanners and you don't have to empty out your bag anymore. So much smoother. Then I fly back and get all annoyed at the other airports. I was told Oslo airport is holding out until it becomes regulation to use the new scanners. Security-Theater is still what it is. It is super weak imho, despite never having seriously attempted a heist or tryi…

> despite never having seriously attempted a heist or trying to get contraband on a plane

So you've tried casually? What does a casual heist look like exactly?

Re: Heathrow scraps liquid container limit

#518

Earlier quoted context omitted.

It wasn't -- was just noting that people keep saying "MRI", when there's no 5T fields around most security checkpoints

Isn't the world of MRIs moving towards lower teslas instead of higher?

Both. 1.5/3 T is standard, >3 T machines (such as 5 T from United Imaging) are becoming more popular (and affordable) and at the same time ultra low field ones keep improving and now they make some things that were impossible before now actually doable such as bed-side MRI (not in clinical practice of course, but there was nice engineering proof of concept with ultra low field MRI machine that could be powered by normal power outlet).

Re: Heathrow scraps liquid container limit

#519

This just adds confusion as to the purpose of all this. The motivation behind the liquid limits is that there are extremely powerful explosives that are stable water-like liquids. Average people have never heard of them because they aren’t in popular lore. There has never been an industrial or military use, solids are simpler. Nonetheless, these explosives are easily accessible to a knowledgeable chemist like me. The…

I think the idea is that the new scanners they have are capable detecting liquid densities better so that they can actually tell the difference now?

Re: Heathrow scraps liquid container limit

#520

This just adds confusion as to the purpose of all this. The motivation behind the liquid limits is that there are extremely powerful explosives that are stable water-like liquids. Average people have never heard of them because they aren’t in popular lore. There has never been an industrial or military use, solids are simpler. Nonetheless, these explosives are easily accessible to a knowledgeable chemist like me. The…

>is reminds me of the chemical swipes done on your bags to detect explosives.

I've also had this done on my dialysis port at some airports here in India :-|

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