Being searched at security is read as being scrutinised and having to prove you are trustworthy. Dream tradition takes it as vulnerability and as the fear of being stopped before you can leave.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.