Security Optional?

I made my first rookie mistake although I'm sure it won't be my last. After going through the hotel security and getting my bags scanned I was invited into a black tented room by a woman. I politely said "no thank you" and kept walking. Who knows what I was thinking, actually I think I was thinking that looks like a photo booth and I certainly don't need my picture taken. After asking other visitors what that was all about, I realized it was a security procedure. Apparently the tent was not for pictures after all but where the women went to be wanded. I'm surprised I wasn't tackeled after refusing the procedure and blithely going on my way. I have since conformed and made ammends with the confused female security guard.