I have two identical pairs of shorts that I bought from Macy's, same brand, same color, and they have some zippers on the leg with some pockets.....I bought them about 2 months apart. Well, in Disneyland one pair set off the metal detector every time (and at the airport too), the other pair did not. I couldn't figure it out. I was going to mark the pair that set off the metal detector so I knew but I forgot. I guess if I go through a detector again wearing them I'll find out. In regards to your spoiler tag, that is why when I travel I wear one that doesn't have a wire, but I never thought about it at any other spot that had detectors.