Ditto to ssullivan's comments and experiences.
In addition to inventing a clip to keep the toilet seats up on the Boening fleet (

) I'm going to invent a piece of plastic to rest over the scanners to eliminate overhead glare for the PDA BP's.
The process is simple, and I've walked a couple of TSA agents through it, that had never seen it before.
The only ongoing kerfuffle at EWR is in the dilemna of showing your BP after you go through the metal detector. I usually say "I have an electronic BP on my blackberry. Do you want to see it before I put it through the x-ray" and then the answer varies wildly.
You know, cause the "standardization of airport security" is oh so standardized.