PPT-Fingerprints and Other Impressions

Mrs Svedstrup 1 Chapter 7 Fingerprints Major Form of ID Major goal of criminal and civil investigation process is to identify people Fingerprinting is widely used All individuals have unique set of fingerprintseven identical twins . Impressions rather than standard impressions, advertisers cut out risk of wasted spend on unseen ads or fraudulent impressions. engage:BDR’s Viewable Impressions boast high engagement and perfor September . 9. , . 2014. What are Fingerprints?. Does . everyone. have a unique fingerprint? . . How, why, and when do fingerprints develop?. Watch this!. What are Fingerprints?. Does . everyone. have a unique fingerprint? . WHORL PATTERN. FINGERPRINT. FINGERPRINT patterns. GALTON DETAILS. Galton Characteristics. . SHORT RIDGE/. ISLAND . DOT . FORK/. BIFURCATION ENDING RIDGE. . . Three fundamental principals of Fingerprints. Individual characteristic. Will remain unchanged during the individual’s lifetime. Have general characteristic ridge patterns that permit systematic classification. “Fingerprints can not lie, . but liars can make fingerprints.”. —. Unknown. RECORDING PRINTS. rolling . inked prints. primary identification number. LIFTING PRINTS. Black. , white and fluorescent powder. Tool marks. Chapters 15 & 16. PVMHS. , 2015. Student objectives:. Distinguish between patent, latent, and plastic impressions . Describe how to make foot, shoe, and tire impressions . Use track width and wheel base information to identify vehicles . What you Need to Know . (but may already know). History. Sir Edward Henry (of London Metropolitan Police) developed modern system of identifying criminals by their fingerprints in . 1900 . The Henry system (as it is sometimes known) was so useful in criminal investigations that it was adopted around the world. Types of impressions. Patent Impressions- Visible, two dimensional impressions produced as an object moves through soil, dust, paint, blood, or other fine particles. Latent impressions- hidden to the eye, but can be visualized through the use of special dusting and electrostatic techniques or chemical developers.. Ridgeology. : The study of the uniqueness of friction . ridge. structures and their use for personal . identification. .. 1.  . . The koala is one of the few mammals (other than primates) that has fingerprints. In fact, koala fingerprints are remarkably similar to human fingerprints; even with an electron microscope, it can be quite difficult to distinguish between the two.. a. Identify and utilize appropriate techniques used to lift and evaluate readable, latent, plastic and visible fingerprints. . SFS2. Students will use various scientific techniques to analyze physical and trace evidence. . Fingerprints. Palm Prints. Barefoot Impressions. PATENT/VISABLE. PLASTIC. LATENT. FRICTION RIDGE IMPRESSIONS. PATENT/VISABLE PRINT. Friction ridges that are stained with a foreign colored substance, such as blood, ink, paint, grease or dirt. This makes a visible impression that can be seen with the naked eye.. Refer to the POST Goal . and Objectives. Definition of Fingerprint. Fingerprint-. The . impression or mark left by the underside of the tips of the . fingers . or thumbs. The impression is formed by a pattern of ridges on the skin surface. This pattern is unique for each individual and therefore can serve as a . 2 Types of Crime-Scene Prints. 1. Visible Print- A fingerprint made when the finger deposits a visible material such as ink, dirt, or blood onto a surface.. 2. Plastic Print- A fingerprint impression in a soft surface.. Fingerprints are an impression of the lines on the inner surface of the thumb and fingers.. Patterns are made by tiny ridges on the skin.. The ridges on our fingertips help us grip objects.. When we touch .