The Fingerprint Replicator Utensil Kit is one of the SPY Gadgets in SPY Fox 2: "Some Assembly Required". The fork gets placed on the target's plate. When the target picks up the fork, their fingerprint will appear on the spoon. SPY Fox uses it to get a copy of Napoleon LeRoach's fingerprints to gain access to the Control Room inside the Dogbot.
The fork can detect fingerprints, even if the target happens to be wearing gloves.