The FBI has fingerprint database that tracks fingerprints to help law enforcement solve crimes: The Integrated Automated Fingerprint Identification System.
They house "the fingerprints and criminal histories for more than 66 million subjects in the criminal master file, along with more than 25 million civil prints. Included in our criminal database are fingerprints from 73,000 known and suspected terrorists processed by the U.S. or by international law enforcement agencies who work with us."
But, you know what? Disney World also has a fingerprint database.
To get into their parks, you have to put your card through a machine...and match it with your fingerprint.
I bet Disney World has a better and more comprehensive database than the FBI, whatcha wanna bet?!!