>Concerning the dead man's privacy, it doesn't matter, he's dead.
Religious people who believe in afterlife would disagree with this, so I think it's still a valid point to discuss in general, although it might not be the point in this particular case.
The man is objectively dead and loss of privacy doesn't affect it any more. The living - you, me, the family of the dead man - want that corpse and the memories we associate with it treated with a certain level of respect.
I'm not sure how religious you must be to become hysterical that a dead finger was placed on a phone to help solve a crime.
Religious people who believe in afterlife would disagree with this, so I think it's still a valid point to discuss in general, although it might not be the point in this particular case.