While it's encouraging to see such a thorough debunking of the latest security theater technology, it's always been security theater... Allow me a few quick anecdotes:
My family is friends with a gentleman who was a green beret medic during Viet Nam, and later worked for the CIA. Once, when I was younger (and metal detectors were the norm), we had the opportunity to fly with him. He entered the metal detector before me, and was waved along. Once we were past the detectors, he turned to me and said, "Guess how many blades I have on me?" He then proceded to produce seven blades. They were a combination of ceramic blades (undetectable by the metal detector and sharper than most metal as well) and traditional blades held or placed on him so that they would not set off the detector. It was part of his CIA training to be able to do that.
I went to college at Stevens Institute of Technology. The Chemical Engineering department there has a lab known as the Highly Filled Materials Institute. When I was an undergraduate, I got a tour of the lab. They informed me that they had been working on an extruder that they were selling simultaneously to Picatinny Arsenal and Hersey. It turns out that C4 and Chocolate are both colloidal suspensions with nearly identical properties. A consequence of this is that in the X-ray machines used in airports, plastic explosives are indistinguishable from chocolate.
Shortly after 9/11 my father, a very frequent traveler, had forgotten his nail clippers in his carry-on luggage. Predictably, they were confiscated. When I greeted him at the airport, he remarked on how ridiculous that was, as he produced his fountain pen from his jacket pocket. "They let me on with this," he said. "I could have stabbed anyone in the eye with this and they'd be dead. What was I going to do with nail clippers?"
...I could go on, but why?
My family is friends with a gentleman who was a green beret medic during Viet Nam, and later worked for the CIA. Once, when I was younger (and metal detectors were the norm), we had the opportunity to fly with him. He entered the metal detector before me, and was waved along. Once we were past the detectors, he turned to me and said, "Guess how many blades I have on me?" He then proceded to produce seven blades. They were a combination of ceramic blades (undetectable by the metal detector and sharper than most metal as well) and traditional blades held or placed on him so that they would not set off the detector. It was part of his CIA training to be able to do that.
I went to college at Stevens Institute of Technology. The Chemical Engineering department there has a lab known as the Highly Filled Materials Institute. When I was an undergraduate, I got a tour of the lab. They informed me that they had been working on an extruder that they were selling simultaneously to Picatinny Arsenal and Hersey. It turns out that C4 and Chocolate are both colloidal suspensions with nearly identical properties. A consequence of this is that in the X-ray machines used in airports, plastic explosives are indistinguishable from chocolate.
Shortly after 9/11 my father, a very frequent traveler, had forgotten his nail clippers in his carry-on luggage. Predictably, they were confiscated. When I greeted him at the airport, he remarked on how ridiculous that was, as he produced his fountain pen from his jacket pocket. "They let me on with this," he said. "I could have stabbed anyone in the eye with this and they'd be dead. What was I going to do with nail clippers?"
...I could go on, but why?