FlyerTalk Forums - View Single Post - PV: Screening before the checkpoint is back in style
Old Apr 25, 2009 | 1:13 pm
  #23  
Trollkiller
 
Join Date: Jul 2008
Location: Florida
Posts: 3,006
Originally Posted by BubbaLoop
Sorry but I have to repeat the logical (and therefore unanswerable) question: Why are they buying these full body imagers, if they do have a choice that does pretty much the same without generating a nude image?
In a word, reliability.

With the walk through MMW you have a controlled environment that is tuned to allow the sensor to see through clothing.

With the passive MMW it relies on ambient radiation. Because the ambient radiation varies by location the reliability of the machine is lower.
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