PCGUMSHOE is correct. The metal detectors at the airports are usually not set high enough to detect the port. If by chance it should, explain to the TSA person what you had done. Yes, they will put you in secondary screening, (using the wand). And yes you can request to be taken in private, versus being screened in public. Just plan for the extra time and don't get huffy with them. Remember they are there for your protection (I don't think any of us want another 9/11), and causing a scene can cause you to be delayed longer. PC is correct that TSA does not have arrest authority, but they do have the authority to detain you till someone like me (airport police) show up and find out the problem. This delay could take long enough to cause you to miss your flight.