Perhaps not most, Looking online FBI says it has 70 million known criminal prints and 34 million civil prints. There's also this which is funny, "How do you k

Perhaps not most, Looking online FBI says it has 70 million known criminal prints and 34 million civil prints. There's also this which is funny, "How do you know if you're in the FBI database? According to Department of Justice rules, you have the right to submit your own fingerprints for a background check on yourself. (This allows you to contest anything that might be on your rap sheet.) Just write out a formal request and send it to the FBI, along with a full set of fingerprints and a money order for $18."