new airport nudity machines

Here’s the famous picture showing how the backscatter machines for airports work.

(AP Photo/Brian Branch-Price)

Some important questions:
Would repeated use make cancer or other medical conditions more prevalent?

Are the people running the machines allowed to save or print out the pictures for their own use or for sale to others, like child pornography collectors or celebrity magazines?

Would people visiting airports be less likely to wear underwear? If you look at the picture closely, it seems that panties cause a fat roll at the midsection on the sides.

Will the machines damage or disable devices such as cellphones, pace makers, or hearing aids?