Do people with a lot of jewelry and piercings set off metal detectors?

Hahaha. Thanks. Makes sense.

Pacemakers can. The operators know about them.

Actually, the instant I tell the inspectors that I have a pacemaker, they pull me out of the queue and do the hand thing. I think they can detect the pacemaker too, although I have never asked. And as I said earlier, there is the metal plate in my ankle.