| Author | Message | ||
     ana santos (Unregistered Guest) Unregistered guest Posted From: dialup-4.131.132.116.dial1.losangeles1.level3.net |
this is very interesting, i need this for my science project also | ||
| Kasey Wertheim |
Terry, The fundamental reason why no two fingerprints will ever be found to be the same is due to the differential growth Mr. German mentioned earlier in this twins post. To expand on that with regards to AFIS, the detail that AFIS looks at is level 2 detail; ending ridges and bifurcations. Since this detail is formed based on completely random factors, this detail will never be exactly duplicated. The fact is, no two fingerprints will ever be found to be exactly the same (by humans or AFIS) because no two fingerprints ever WILL be exactly the same. To say that possibility exists would be to ignore the law of biological uniqueness, which states that no two organisms will ever be exactly the same. Human skin is one of the largest organs in the human body. It is subject to that law, therefore detail on skin will never be exactly duplicated. Even in identical twins. | ||
| Terry Woodhouse |
Is it possible that out of the current world population of some 6 billion people there might be at least two persons with the same fingerprints? If every person in the world had their fingerprints on a computer file how long would it take the experts using the world's most powerful computers to check each & every print against each & every other print to determine that no two match? It seems to me that it would take several lifetimes to do the task! | ||
| Ed German |
Differential growth and environmental factors cause twins to have different fingerprints. When you have looked at identical twins, you may have noticed that freckles, moles, and other small features are different between them. Fingerprint patterns are determined primarily by the prominence of the volar pads during fetal development. High pads tend to cause whorls, low pads plain arches, pads to one side or the other radial or ulnar loops, etc. The height of the volar pads is genetically programmed and thus fingerprint patterns (not individual level 2 or level 3 detail) is inherited. Differential growth of the skin and environmental conditions (which twin is on top, etc.) cause the completely different, random and unique location of level 2 and 3 detail. | ||
| kaveeta |
i really need this for my science project. please. |
