FingerPrints

Well after looking at all the information I found youll be glad to not have to read it yourself but heres the most important parts-

Finger prints are raised ridges in the finger that create patterns

No two fingerprints are the same even identical twins have different finger prints!

There is four main types of finger prints:

arch

whorl

loop

tented arch








Crime scene investigators(thats me) have to take picture,scan the area with a special machine(kevin probe detects the fingerprint)and use a special powder to make the ridges stand out more.Fingerprints can be left on about anything such as motor oil,blood,paint,ink ect.


There are three types of print latent-any chance or accidental impression left by raised parts of a fingerprint,this way isnt very good as the print may become distorted and or smuged making it difficult to see the fingerprint which may lead to wrongly accusing someone. anothe way is patent-these are prints which are easy to see with your eyes and are caused by another material getting onto the finger and then printing it somewhere else an example of this an inkpad,these prints are usually to take a picture.Plastic prints are a print which has been put nto somthing which has ket the shape of the ridges of the fingers,examples which are commonly saw are fingers put in window putty,melted candle wax and thick grease deposits on car parts.You then take photos of the mould then try and make non-plastic copies

Electrical detection by rolling the finger on a scanning machine which will detect the raised ridges in the finger.But when there is too much pressure on the finger it can cause distortions in the end product

Another is using powder to discover the ridges in the skin by making the ridges stand out on the surface it was put on.

The kevin probe is scanned over the ared of the fingerprint it detects voltage, or electrical potential, at pre-set intervals over the surface of an object on which a fingerprint may have been put! The results produce a map or image of the fingerprint, the probe is used mainly on fingerprints which have been put on metals as they are easier to detect.

Well I have done a lot here I hope the constable will be happy with my progress=]