Friction Ridge Comparison Theory

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Friction Ridge Comparison Summary

Introduction:
Friction Ridge comparison is used a lot by the CSI and FBI nowadays. The purpose of the study was to come up with a basic analysis of the science of friction ridge patterns on skin, and to approve further research for the friction ridge patterns on the skin to be tested, and to come up with a hypothesis for that idea/theory. At first the scientists was unable to find the right piece of information (literature) that supports their assumptions of the friction ridge patterns of skin, until they found a way. They decided to interview professionals in fingerprint analysis, look at statistics, other legal information and other scientists to help understand the basis of it and to collect any information
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This approach is used to understand the results and inputs separately with no connection deduced between them. For analyzing friction ridges using the black-box approach, the examiner must be tested with many inputs that have range of categories of prints. The black-box approach would help determine whether it is possible or not to have accuracy. There is also some subjectivity in using the black-box approach. In the approach, one would have to use a blind technical review and that the examiner would also have no awareness of the findings from the previous person that was examining the data (fingerprint ridge …show more content…
This approach is to have a certain number of people that can test the hypothesis and that have no background information about the research or the experiment itself. For this study, once a minimum threshold is set, then it should be selected by the best latent examiners. The minimum threshold must have the clarity and quantity of features (of the latent fingerprints) and also include all the levels of details, basically no minutiae. The group of scientists found out that there is no official minimum threshold, so examiners would just simply send a latent print to illustrate simply not continue with the process unless there are a certain 7 points on the print. The seven prints can be used as placeholder for the minimum threshold. The seven points are tested by models based on statistics and black-box testing. The qualitative approach can include the black-box approach based on certain situations (identifying 7 points on a latent print). The quantitative approach seems much more in depth than the black-box

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