Odd how they do that where there isn't any consistency.
If you believe that the smoke and mirror show the TSA does is in any way real security, you are sorely mistaken.
Having a little inside info of my local airport and I guarantee you I could easily access the secure areas. Not that I would, because the Homeland Security people ARE good at arresting people, as opposed to being worthless at protecting people.
i sit and wonder what fuction does the TSA really does provide us in the long run ..
When we designed our checkpoint friendly carbon fiber cases I spent a great deal of time going throught the TSA guidelines for designers. The main thing (at least for laptops), they need a complete unobstructed x-ray of the laptop. I.E, no metal covering any part of the electronics being viewed.
www.mach3composites.com
X-rays will penetrate ALL metals but one: Pb = Lead.