AFIS (Automated Fingerprint Identification System) is a computer database maintained by the Illinois State Police. The database consists of known impressions from both criminal and civilian sources. AFIS is used as a searching tool to find possible identifications for unidentified latent fingerprints and palm prints. Not every latent fingerprint suitable for comparison has sufficient qualities for an AFIS search. In order for a latent to be searched, it must be reasonably clear and contain an evident pattern type. The NIRCL not only has the ability to search at the state level, but can also search the FBI database, IAFIS (Integrated Automated Fingerprint Identification System).
The quality of known impressions in the database does not necessarily meet the quality standards for a thorough comparison to latent fingerprints. It is highly advised to submit elimination and suspect fingerprints, palm prints or Major Case Prints to the laboratory whenever possible.