Last year the TSA implemented a privacy algorithm for millimeter wave body scanners, their blog post indicated they were testing a similar program for backscatter machines last fall.
http://www.tsa.gov/press/releases/2011/0720.shtm
I’ve not heard anything further on the web. Anyone know anything further? Wondering if there’s still airports I need to avoid if I don’t want anyone to see or touch my “junk”.