I think you are advocating something like putting a diamond ring on view behind one of your house's windows. If the ring gets stolen by someone breaking in via

I think you are advocating something like putting a diamond ring on view behind one of your house's windows. If the ring gets stolen by someone breaking in via the window then you know it has gone but you do not know whether the thief say changed the locks in some way. Now they can come and go with impunity.