Furthermore I fail to see exactly what concrete harm is being done that justifies your calling body scanners a weapon.
I would only be annoyed for reasons other than inconvenience if the contact is unprofessional. Assuming that it's not, and everyone else is doing the same, I wouldn't feel like I was being violated.
My basic point is that the liberty being infringed upon by these scanners (i.e. liberty to hide your genitals from people) is frivolous. So I'm asking for other reasons that these should be disallowed. This seems to be a very unpopular point of view for some reason.
In the case of scanners, under the same assumption of completely professional conduct, I see no problem. She would probably be more emotionally scarred by a visit to the doctor.
Kids generally don't have any problem running around naked. It's the adults that feel self-conscious.