Re: But how to know if someone has an implant?
@ Wzrd1:-
"But I imagine that, say, titanium wire bound round a femur to hold it together could just conceivably form a multi-turn coil, in which case it might be dangerous due to circulating current in a rather high resistance metal."
Only if you have some magical overriding law of physics that surrounds you and turns titanium into a ferromagnetic metal.
Last I heard copper wasn't ferromagnetic. However current is induced in copper wire loops. So maybe your theory needs re-thinking.
Biting the hand that feeds IT
