I despise and loathe that phrase.
I'm sorry, but I lack a script writer and editor (or they're drunken practical jokers...) who can make a test that takes weeks -- if it works -- to get results be not only done, but give a perfect result, in minutes...
I can't stare at a fingerprint in the field and identify the owner. Not even with a jeweler's loupe.
And we don't have computers that can pull usable, identifiable images from no data...