NCJ Number
141679
Journal
Journal of Forensic Identification Volume: 43 Issue: 2 Dated: (March- April 1993) Pages: 138-143
Date Published
1993
Length
6 pages
Annotation
Based on current technology and the use of more sophisticated equipment, it is sometimes possible to determine which of two overlapping latent fingerprints was first placed on a nonporous surface.
Abstract
The FBI recently conducted research on this issue as a result of a request from a Pennsylvania police department. While investigating a commercial burglary, the police found overlapping finger and palm prints of a company employee and another suspect on a company safe. The employee denied involvement in the crime and stated that he had moved the safe during his employment with the company. Although fingerprint experts usually believe that it is impossible to determine which of two overlapping fingerprints was placed on an item first, the FBI conducted many tests using several types of nonporous surfaces. Prior to processing the items with super glue or powder, they received a macroscopic examination using varying degrees of magnification. Several factors were found to aid in determining which fingerprint initially toughed the item. Other tests using the cyanoacrylate fuming process and processing latent prints with different fingerprint powers presented the same results. Further research is being conducted using the cyanoacrylate process in conjunction with certain fluorescent chemicals and alternative light sources. Photographs and address from which to obtain further information