Latent- Marks left behind at the scene of a crime which may not be immediatly visible to the naked eye. To expose latent fingerprints, technicians use fingerprint powder, fuming, and other techniques.
Plastic- A friction ridge impression from a finger or palm (or toe/foot) deposited in a material that retains the shape of the ridge detail. Commonly encountered examples are melted candle wax, putty removed from the perimeter of window panes and thick grease deposits on car parts. Such prints are already visible and need no enhancement, but investigators must not overlook the potential that invisible latent prints deposited by accomplices may also be on such surfaces. After photographically recording such prints, attempts should be made to develop other non-plastic impressions deposited at natural finger/palm secretions (eccrine gland secretions) or contaminates.
Direct- These are friction ridge impressions of unknown origins which are obvious to the human eye and are caused by a transfer of foreign material on the finger, onto a surface. Because they are already visible they need no enhancement, and are generally photographed instead of being lifted in the same manner as latent prints. Finger deposits can include materials such as ink, dirt, or blood onto a surface.
This is reallly good Whitney. It is very discribtive:) Looks like you did alot of research. Job well done.
ReplyDeleteReally, this is a great blog. You sure do know your types of fingerprints. Bene!
ReplyDeleteyou have a TON of info but you might want to add more pics
ReplyDeleteThere is soo much information on these. Like Madison said, you might want to add another pic here or there; give more of a physical image as to what they are. Good job though, kudos!
ReplyDeleteI agree you should add more pictures but overall you did a great job whitney! =]
ReplyDeleteI disagree with Madison and Lizzie. I think you have plenty of pictures, as well as plenty of information. The scenario is missing in the "CSI" section, but otherwise it's good.
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