Millimeter wave scan machine at Denver Airport

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I snapped this photo of a passive millimeter wave scan machine set up in the main entrance hall at Denver International Airport on Friday evening. The machine was swiveling back and forth, searching people who didn't even know they were being scanned. I'm sure some of the people scanned weren't passengers; they were simply coming to pick up or drop off friends and relatives.

I wanted to see if they would scan my 11-year-old daughter as she walked by so I walked over to the desk with the computer monitor on it. I got a peek at the monitor for a second or two before one of the bald guys to the left of the TSA agent jumped in front of me and said I wasn't allowed to look. I couldn't tell which person was undressed on the monitor.

If federal agents set up this system at a shopping mall, would people care?

The TSA's blog states that the scanner's monitor be placed in a "remote location":
A couple of bloggers have advocated for the officer viewing the image to be out in the public area. We specifically require the remote location to protect the privacy of passengers using the machine. We just don’t think it’s appropriate for other passengers, airport, airline employees or just anybody walking by to see the images, much less snap a photo with a camera phone or anything else and post that image to TMZ.com or who knows where. That’s also why officers are not allowed to bring anything, including phones, bags or other items into the remote viewing location.