It's not just about privacy, it's also about proper security procedures. I decided to refuse to walk through the scanner because I didn't know what is was. I travel a great deal and feel that the X-ray exposure from flying is more than enough, so I decli Ed to walk through the scanner. I said, I don't want to go through the X-ray, and the TSA personnel indicated that it was radio waves not an X-ray. I couldn't see any posted information regarding the machine, so I was not inclined to just trust them. I tried to wait to the side so that's could be patted down instead, and they wanted me to go ahead and send my things through the X-ray machine. I declined indicating that I did not want to send my things through to where I could not see them. They didn't appear to like that very much nor have any kind of procedure for getting me through security. I eventually had to give up and subject myself to the scan. Once I went through, they sounded surprised when someone said "she's clear!". Of course I'm clear you fools. Next I asked if they had information about the scanner and the TSA employee referred me to her manager in the booth I went over and asked if they had any information about the scan, and she condescendingly replied, "no". If you want people to comply have a process and accessible information!!!