Fingerprints and Palm Prints

Contact our Fingerprint and Palm Prints Lab Today! Michael Sinke – Latent Print Specialist, Forensic Document Analyst, Crime Scene Reconstruction

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Fingerprints can have several different applications in litigation. The first is showing a person was in a particular place, such as a crime scene. Other evidential values which are often overlooked are fingerprints on anonymous notes or other documents where someone denies a connection to or authorship of a particular document. We have the ability to develop fingerprints which have been on paper for up to several years.

The theory for the use of fingerprints and palmprints as a positive means of identification is based on two principles:

* 1) They are “permanent” in that they are formed in the fetal stage, prior to birth, and remain the same throughout lifetime, barring disfiguration by scarring, until sometime after death when decomposition sets in.

* 2) They are “unique” in that no two fingerprints, or friction ridge area, made by different fingers or areas, are the same (or are identical in their ridge characteristic arrangement).

The display below points out some of the parts of a fingerprint and the characteristics used to identify them (ridge ending, bifurcation, enclosure, short ridge and ridge dot).

Inked Fingerprint

Court Appointed

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Legend

 

1) Ridge Ending 5) Ridge dot
2) Bifurcation 6) Core
3) Enclosure or Island 7) Delta
4) Flexure crease 8) Short Ridge

 

Presentation Exhibit

A comparison is made by searching the inked (known) fingerprint and the latent (unknown) fingerprint for corresponding ridge characteristics.

These ridge characteristics have to be of the same shape, the same type, occupy the same relative position and possess an adequate number of identification points with no unexplainable differences in both the inked print and the latent print before a positive identification can be made.

Inked Fingerprint

Latent Fingerprint

Contact our Fingerprint and Palm Prints Lab Today! Michael Sinke – Latent Print Specialist, Forensic Document Analyst, Crime Scene Reconstruction

Full Name (required): Preferred Contact Method:
Email (required): Phone:
Additional Information:

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