[citation][nom]okibrian[/nom]So you're OK if it is your wife or kid being looked, right?[/citation]
As long as the images can't be stored it doesn't matter. You don't know the person, you won't probably see them again nor will they see you, so if they've seen you naked for a few seconds what difference does it make? They will forget about what they saw when hundreds more people will walk through after you.
If a pervert is doing the checks... well they've scored themselves the perfect job haven't they? But you don't know if the guy/girl is a pervert so it doesn't change anything even if they are.