TSA has for several years used "backscatter" machines at airports which give subjects a dose of radiation each time through, as well as produce a nude image of the subject. Of course, if you trust TSA or the govt. they say the images are private, and the dose is not harmful. Notice the you will never see the TSA workers themselves going through the claimed to be safe radiation doses. Watch sometime and you will see the workers bypass the machines.
You can also be pretty sure the all the attractive women were sent through the machines, even down to young girls.
Anyway, they have just announced that they are getting rid of these machines , but are in no hurry so will keep them until June.