Advances in Fingerprint Technology.pdf

Physical
Methods
Visual Examination
Photography
Enhancement Methods
Chemical
Methods
Photography
Figure 4.2 General approach to developing latent fingerprints.
Luminescence
Methods
and developed sequential procedures for improved visualization of latent fingerprints
on porous and nonporous surfaces.
Figures 4.2 through 4.7 represent some of the systematic approaches that
have been successfully employed by the Connecticut State Police Forensic
Science Laboratory. Figure 4.2 represents a general approach for the detection
of latent fingerprints. Figure 4.3 is a scheme for the enhancement of bloody
fingerprints. Figure 4.4 shows the approach for the detection of latent fingerprints
on nonporous surfaces. Figure 4.5 is the procedure used for visualization
of latent fingerprints on greasy or waxed surfaces. Figure 4.6 shows
the systematic approach for the detection of latent fingerprints on adhesive
tape. Figure 4.7 is the procedural scheme for the development of latent fingerprints
on paper products. These logical schemes serve primarily as suggested
orders for the application of a series of techniques to the processing
of latent prints by examiners. They are not to be regarded as complete or
perfect. The systematic approaches should be continuously modified and
refined as new procedures, chemical reagents, and approaches are developed.
The fingerprint field has witnessed revolutionary change in the last 30
years, especially in the development of novel methods for the development
and enhancement of latents. Many of the newer methods are based on clever