Originally Posted by
Boggie Dog
How thick is a Super Bowl program? And what kind of x-ray can see through metal but not a program likely thicker than a couple of magazines?
I'm not so sure that its technology that's the problem on this kind of thing.
I have read somewhere that it's because most paper is 'organic' - processed wood. Books or piles of paper, particularly thin paper, are both dense and 'organic'. It's supposedly similar to the reason cheese in blocks will get pulled for inspection - it's a dense 'organic' that some xrays/operators can't distinguish from a block of some kind of explosive.