by Raymond » 24 Mar 2015 19:06
I am referring to a trap pin where the bottom pin is covered by a thin wafer, like a #1 master wafer. The correct key always raises the wafer above the shear line. If the lock is picked with the wafer down in the plug, as it most likely will be, then there will be nothng to contact the spring loaded trap pin above. If a trap pin has been exposed by picking, the trap is already set. Dental floss would have no effect. A strong plug spinner might still get lucky.
Nothing is foolproof to a talented fool. Wisdom is not just in determining how to do something, but also includes determining whether it should be done at all.