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CRJ 311
CRJ 311 foresic
35mm camera week 4 Asingment

35mm camera week 4 Asingment - 35mm camera/digital camera... 

35mm camera/digital camera, lens selection, use of electronic flash, macro-photography and documentation. A casting kit might include multiple casting compounds (dental gypsum, Silicone rubber), snow wax (for making a cast in snow), a bowl, a spatula and cardboard boxes to hold the casts. Fingerprints Tools for recovering fingerprints include brushes, powders, tape, chemicals, lift cards, a magnifying glass and Super Glue. A crime lab can use fingerprints to identify the victim or identify or rule out a suspect. There are several types of prints a CSI might find at a crime scene: All the usual rules about chain of custody pertain here. The item bearing the print or the tape lift must be carefully packaged, labeled, and sealed. Items have to be packaged so as to provide maximum protection of an undeveloped print impression. Nothing should touch or rub the impression during storage or transport. Some type of wood or plastic trough would have to be used to protect the ridge impressions from the package during transport. Developed latents must also be protected. Tape lifts are placed onto backings, and are thus protected. At one time, fingerprints were taken from known individuals by inking the fingers and impressing them onto fingerprint cards. In addition to including a labeled box for each finger, there was space on the bottom of the card to reprint the thumbs, and to impress the four fingers of each hand. These impressions served as back-ups if the main boxed impressions were not of high enough quality for a comparison. Fingerprints from these ten-print cards can be scanned into AFIS systems to build the single print databases. Today, most fingerprints are collected by Live Scan technology. The person places each finger (and thumb) onto a small scanning plate. Sometimes, there is an on-screen guide to help the person adjust the position and pressure of each finger. The device then scans the prints directly into an AFIS. These devices can be seen at ports of entry into the United States, such as in international airports. Fingerprints are a form of biometric identifier, a biological measurement or feature of a person that has the potential of being used as the basis for individualization. Other types of biometric identifiers include DNA; facial features; parts of the eye, such as retinas and irises; and even handwriting. The beginning of the recognition of fingerprints as a unique personal identifier is shrouded in the mists of history. Fingerprints are the result of a type of skin, friction ridge skin, which is found on the ends of the fingers, in the palms, and on the soles of the feet of primates, including humans. Though palm prints and footprints can be compared and analyzed, the most work has been done on fingerprints. 

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 Week 4 Asingment
 CRJ 311 Week 5 Discussion 1
