I know there's a lot of talk about Obama implementing the porno-scanners, but they were recommended in 2004 by the DHS.
<snip>
Walk-Through Metal Detector Alarm Resolution (WTMD). There were instances where
the WTMD alarmed, but screeners failed to resolve3 the alarm properly.
A technology
that could be used to manage the resolution of WTMD alarms is backscatter x- rays.4
Backscatter technology offers a more effective and unambiguous alarm resolution
strategy than a pat-down inspection. Backscatter technology has some drawbacks,
however, including the size and amount of space needed for the equipment, its cost, the
rate of passengers screened per hour, and concerns about radiation exposure and privacy. 5
We recommended that TSA aggressively pursue the development and deployment of
innovations and improvements to aviation security technologies, particularly for use at
the screening checkpoint. TSA agreed with our recommendation and is working to
implement it.<snip>
http://www.dhs.gov/xoig/assets/mgmtrpts/OIG_04-37_0904.pdf (Page 5)