The sad thing is that even if you're not in the machine, the machine can still scan you -- as long as you're within a certain distance of it.
When the machines first started being used there was some expose on them where pics from the machine were leaked, and you could clearly see that even people waiting in line within about 10 feet of the machine or so were scanned, and you can clearly see their bodies appear in the images, just as you can those who were in the machine itself.
Now, being scanned outside of the machine probably doesn't give them as good an image as outside of the machine, and they won't get an image of both sides of your body, but nevertheless your body will be covered to some extent with radiation from the machine.
I've always opted out of the machines at the airport, and they've always made me wait in a chair within 10 feet or so of the machine. So I know I'm getting some radiation dose from it, but really don't know what to do about it.
Tell the TSA agents that they need to tell their doctors to aggressively screen for cancer. Standing next to these things for 40 hours a week for months has NOT been proven safe.
Hopefully, the cost of supporting this useless security theater will make it infeasible eventually.
The TSA got rid of all the backscatter x-ray machines, so the body scanners aren't using ionizing radiation anymore. This was the biggest health concern with the old devices, and I was really glad to see those gone.
The newer scanners use millimeter wave RF, which is non-ionizing and much safer. The primary concern with RF is classic thermal effects, which shouldn't be significant at low power levels.
There's still plenty of room for research on the topic, but no direct causal link to any health effects have been found with these systems at present.
(That said, the TSA agents are also standing next to the baggage x-ray machines all day. And I do still see backscatter x-ray body scanners in use in other countries.)
When the machines first started being used there was some expose on them where pics from the machine were leaked, and you could clearly see that even people waiting in line within about 10 feet of the machine or so were scanned, and you can clearly see their bodies appear in the images, just as you can those who were in the machine itself.
Now, being scanned outside of the machine probably doesn't give them as good an image as outside of the machine, and they won't get an image of both sides of your body, but nevertheless your body will be covered to some extent with radiation from the machine.
I've always opted out of the machines at the airport, and they've always made me wait in a chair within 10 feet or so of the machine. So I know I'm getting some radiation dose from it, but really don't know what to do about it.