[Tolerance Sucks Rocks]

I don't know how to prevent this in a way that would not violate personal rights.

You can't. Ma'am, bend over and spread 'em.

[Johnny_Cipher]

I'm also puzzled as to how to prevent this sort of thing. Short of mandating a complete gynecological/rectal exam for every passenger, wouldn't those new X-ray-type scanners detect this kind of foreign substance inside a person's body?