What do you think of the concept that tricking a defendant (say, by falsely telling him that the police obtained his fingerprints off the gun) into

What do you think of the concept that tricking a defendant (say, by falsely telling him that the police obtained his fingerprints off the gun) into making a statement is all right, so long as it doesn't involve psychological coercion? In New York, juries are told that the use of tricks to obtain a statement is permissible so long as it doesn't result in a false confession (that it, if they believe the confession was true then the fact that it was induced by trickery doesn't prohibit its use). What do you think of that?