<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by anonplz:
Kind of like saying, "don't like security checks? become a trusted traveler" which is in itself an even MORE instrusive security check, but "you only have to do it once - see how good we are?" 
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Let's see here:
Voluntarily supplying the number to my (already-issued) passport, my (already-on-file) thumbprint; my (already-issued) state driver's license info; and info from my FF program
VS. having my breasts felt by a stranger?
No contest there on the "which is more invasive" count.