21.02.2013 Views

Advances in Fingerprint Technology.pdf

Advances in Fingerprint Technology.pdf

Advances in Fingerprint Technology.pdf

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

PREMISE 3 – Individualization, that is, positive identification, can result<br />

from comparisons of friction ridge sk<strong>in</strong> or impressions conta<strong>in</strong><strong>in</strong>g<br />

sufficient quality (clarity) and quantity of unique friction ridge detail.<br />

The friction ridge exam<strong>in</strong>ation process must adhere to a standard<br />

scientific method to achieve accurate and reliable conclusions. The<br />

standard methodology consists of four elements: analysis, comparison,<br />

evaluation, and verification (ACE-V).<br />

The two factors <strong>in</strong>tegral to a successful exam<strong>in</strong>ation process are the<br />

quality (clarity) and quantity of friction ridge detail. These two<br />

factors are <strong>in</strong>terrelated.<br />

The four elements to the scientific methodology are as follows:<br />

Analysis: the qualitative and quantitative assessment of Level 1, 2,<br />

and 3 details to determ<strong>in</strong>e their proportion, <strong>in</strong>terrelationship,<br />

and value to <strong>in</strong>dividualize.<br />

Comparison: to exam<strong>in</strong>e the attributes observed dur<strong>in</strong>g analysis <strong>in</strong><br />

order to determ<strong>in</strong>e agreement or discrepancies between two friction<br />

ridge impressions.<br />

Evaluation: the cyclical procedure of comparison between two friction<br />

ridge impressions to effect a decision, i.e., made by the same<br />

friction sk<strong>in</strong>, not made by the same friction sk<strong>in</strong>, or <strong>in</strong>sufficient<br />

detail to form a conclusive decision.<br />

Verification: an <strong>in</strong>dependent analysis, comparison, and evaluation<br />

by a second qualified exam<strong>in</strong>er of the friction ridge impressions.<br />

Uniqueness and permanence of human friction ridges and human<br />

friction sk<strong>in</strong> arrangements are the scientific bases, which permit<br />

<strong>in</strong>dividualization. Biological variation enables <strong>in</strong>dividualization to<br />

be recognized with the application of scientific methodology. That<br />

<strong>in</strong>dividualization is limited to one friction sk<strong>in</strong> area to the exclusion<br />

of all others.<br />

The scientific basis and method stated here<strong>in</strong> establishes friction ridge<br />

positive identification support<strong>in</strong>g <strong>in</strong>dividualization to the exclusion<br />

of all other friction sk<strong>in</strong> ridge areas.<br />

Friction sk<strong>in</strong> ridge and ridge impression <strong>in</strong>dividualization results from<br />

ACE-V.<br />

The government’s case presented by Assistant U.S. Attorney Paul Sarmousakis<br />

dur<strong>in</strong>g the four-and-one-half day July 1999 Philadelphia hear<strong>in</strong>g<br />

<strong>in</strong>cluded testimony about special AFIS research <strong>in</strong>volv<strong>in</strong>g 50,000 f<strong>in</strong>gerpr<strong>in</strong>ts<br />

compared aga<strong>in</strong>st each other, tw<strong>in</strong>s-pr<strong>in</strong>t research, empirical knowledge of<br />

the uniqueness and permanence of f<strong>in</strong>gerpr<strong>in</strong>ts dur<strong>in</strong>g the previous 100 years<br />

and various other support<strong>in</strong>g evidence. No s<strong>in</strong>gle witness or piece of evidence<br />

provided the support<strong>in</strong>g proof of the validity of the science of f<strong>in</strong>gerpr<strong>in</strong>ts.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!