Originally Posted by RadioGirl

We'll probably never know. My guess is that while the stated reason was "privacy", the actual reason was health. To be exact, it was the fear that someone credible would provide evidence of an elevated risk of cancer due to the backscatter, followed by a class-action suit from passengers.

I've no doubt that corruption was involved as well, but the PTB now get payoffs from one company instead of two.

ETA: I like this:

I'm pretty sure we also called them worse things than that: nude-o-scope, for example.