Originally Posted by
Often1
Random searches for Pre-Check ought to be extremely few and far between (an Officer at IAD Pre-Check recently told me that they had not had a "random" in 3 weeks). If you are experiencing these, they aren't random, they are likely due to something in your pockets which is metallic but which you don't realize is.
Well, I assumed that it was metal...I went through it beeped, and I said to her "Belt?" My experience is that my dress belt will occasionally set it off, depending how sensitive the machine is set. So I was all ready to just back out and take the belt off. She said, "No, it's random." So maybe someone with more experience in this area can clarify just what this was...the agent was pretty explicit that it wasn't the metal. I was under the impression that the machines do just beep at every X person to require them to go to the scanner. My point is, is there anything I really could have done from a behavior standpoint to avoid the secondary screening?