"Touched with your fingers" or "touched by your fingers"? [closed]

Charles Fillmore described the grammatical difference (using different examples) this way. "I was touched by your fingers" is the passive of a sentence with an intrumental subject: "Your fingers touched me." "I was touched with your fingers" is the passive of a sentence with an unspecified agent subject: "(Someone) touched me with your fingers." Perhaps that unspecified person was you, or one might think of a serial killer who is in the habit of removing his victims' fingers as prizes, then steals into homes of former victims' lovers and uses previously collected fingers to waken them.