IAFIS is a national finger print and criminal history database maintained by the FBI that has an index of how many known prints. 450 million 500 million 680 million 100 million 980 million

The correct answer is 500 million.<br /><br />The Integrated Automated Fingerprint Identification System (IAFIS) is a national fingerprint and criminal history database maintained by the FBI. As of 2021, IAFIS contains more than 500 million fingerprint records, making it the largest biometric database in the world. These records include fingerprints and criminal history information for both U.S. citizens and non-citizens. The database is used by law enforcement agencies across the country to assist in criminal investigations and to identify individuals in various contexts.