Recording Legible Fingerprints Introduction to Recording Legible Fingerprints The FBI's Integrated Automated Fingerprint Identification System (IAFIS) is the largest biometric database of criminals in the world. Clear, legible fingerprints form the foundation of the Fingerprint Master File, which continues to grow by approximately 13,000 records each day. Agencies submitting fingerprints to the FBI should be aware of the proper procedures for recording fingerprints. The following information will assist agencies in obtaining fingerprints that meet FBI standards. Fingerprint Impression Types Type 4 Rolled impressions are the ten individually-taken fingerprint images rolled from nail to nail. Type 14 Identification flat impressions are taken simultaneously without rolling. Basic Fingerprint Equipment Fingerprints can be recorded utilizing the following methods: Standard Fingerprint Card (e.g., FD-249 and FD-258)—Use ink to record fingerprint images on standard fingerprint cards. Fingerprinting Process Special Circumstances
Crime scene A crime scene is a location where a crime took place (or another location where evidence of the crime may be found), and comprises the area from which most of the physical evidence is retrieved by law enforcement personnel, crime scene investigators (CSIs) or in rare circumstances, forensic scientists. Crime scenes may or may not be where the crime was committed. There are different levels and types of crime scenes. Crime scene preservation A perimeter is taped off with barricade tape in order to keep only those necessary on site. This is done to prevent Contaminated Evidence. Documentation Photographs of all evidence are taken before anything is touched, moved, or otherwise further investigated. Evidence collection Evidence is collected through two ways: forensics and interviews. Types of crime scenes Different types of crime scenes include outdoors, indoor, and conveyance. Reconstruction See also External links
Bloodstain Tutorial The success or failure of any criminal investigation often depends on the recognition of physical evidence left at a crime scene and the proper analysis of that evidence. Crime scenes that involve bloodshed often contain a wealth of information in the form of bloodstains. The pattern, size, shape, and the location of such stains may be very useful in the reconstruction of the events that occurred. William G. ECKERT and Stuart H. JAMES Bloodstain Pattern Analysis: The examination of the shapes, locations and distribution patterns of bloodstains in order to provide an interpretation of the physical events by which they were created that is based on the premise that all bloodstains and bloodstain patterns are characteristic of the forces that have created them. The interpretation of bloodstain patterns found at the scene or on exhibits such as the clothing of the principles of the occurrence can be used to: Properties of Blood: Surface Tension in Blood: Target Surface Texture:
Blood Spatter Analysis CSI effect The CSI effect, also known as the CSI syndrome and the CSI infection, is any of several ways in which the exaggerated portrayal of forensic science on crime television shows such as CSI: Crime Scene Investigation influences public perception. The term most often refers to the belief that jurors have come to demand more forensic evidence in criminal trials, thereby raising the effective standard of proof for prosecutors. While this belief is widely held among American legal professionals, some studies have suggested that crime shows are unlikely to cause such an effect, although frequent CSI viewers may place a lower value on circumstantial evidence. As technology improves and becomes more prevalent throughout society, people may also develop higher expectations for the capabilities of forensic technology. There are several other manifestations of the CSI effect. Background Several aspects of popular crime shows have been criticized as being unrealistic. Trials
List of digital forensics tools During the 1980s, most digital forensic investigations consisted of "live analysis", examining digital media directly using non-specialist tools. In the 1990s, several freeware and other proprietary tools (both hardware and software) were created to allow investigations to take place without modifying media. This first set of tools mainly focused on computer forensics, although in recent years similar tools have evolved for the field of mobile device forensics. Computer forensics Memory forensics Memory forensics tools are used to acquire and/or analyze a computer's volatile memory (RAM). Mobile device forensics Mobile forensics tools tend to consist of both a hardware and software component. Other References
Ballistics CSI: THE EXPERIENCE - Press / Media, Exhibit Walk-Through Exhibit Walk-Through When you visit CSI: The Experience, you first enter a Briefing Theater to watch a fast-paced introduction on a giant flat-screen TV. None other than Anthony E. Finally, CSI's lead investigator, Gil Grissom, steps in and introduces himself as your CSI supervisor. You then begin an intriguing journey to solve a crime mystery by entering one of three very different crime scenes: The Crime Scenes In "A House Collided" a car has run through the living room window of a house in a quiet suburb. In "Who Got Served?" In "No Bones About It!" Beginning the Investigation After exiting the crime scenes, you'll refer to a large wall of crime scene photos and clues you may have missed then begin to analyze evidence in two highly interactive lab areas, each featuring multiple stations that allow for various evidence testing. For "Who Got Served?" Cracking the Case Here lies the moment of truth.
The man who cleans up blood after murders Image copyright Bénédicte Desrus / Alamy Mexico has one of the highest murder rates in the world, but who cleans up the blood at the crime scene when the police and investigators have left? Donovan Tavera is Mexico's first forensic cleaner. As he explains here, his fascination with blood began as a young boy. What happens to the blood after a murder? The first time I saw a dead body was when I was 12 years old. As well as us bystanders there were police officers and investigators. I asked her: "Who cleans the blood after a murder?" When my father came home from work I asked him too: "What happens to the blood after a murder? That was when I decided to find out for myself. A murder isn't the same as an accident - in a murder there is a lot of blood. When I was about 17 I started experimenting. And that's how I became a forensic cleaner. Over the years I have invented more than 300 different formulas to clean up blood. Before I come I ask what happened, and where the corpse is.
Stories about famous serial killers and murder cases at the Crime Library. on truTV.com The Frankford area of Philadelphia was once a town older than the City of Brotherly Love itself. At one time, it was a prosperous area, but by 1980 it had become a crime-ridden slum populated by prostitutes, junkies, and small businesses struggling to survive. This was the area that Sylvester Stallone selected as the setting for his film Rocky. It was here in 1985 where the first victim was found in a railroad yard. Helen Patent was nude from the waist down and she had been posed in a sexually provocative position, with her legs open and her blouse pulled up to expose her breasts. Between seven and eight women from 28-68 became the victims of this violent rapist and serial killer in an old section of Philadelphia.
CSI: THE EXPERIENCE — Web Adventures Attention all teachers, students, or even just the curious--we have a variety of fun, interesting, and education activites free for the download. Click here to see how bone length can be used to calculate height, create your own bill for forensic testing, or solve forensic logic problems--and more! Looking for some fun forensic activites to do at home? From blood spatter analysis to DNA extractions, we've got fun (yet safe) activites for all ages. Check it out! Check here for a collection of new activites guaranteed to put your forensic skills to the test. Looking for even more information on forensic science and criminalists?
decomposition FACTS: WHAT HAPPENS TO A BODY AFTER DEATH (WARNING - Not for the squeamish) UPON DEATH Nature is very efficient at breaking down human corpses. When you die your heart stops pumping blood around your body, thus depriving your cells of oxygen, which rapidly begin to die. Upon death blood also starts to settle in the those parts of the body that are closest to the ground, turning the top part grayish white and waxy looking, whilst darkening the underside. Funeral directors (Undertakers) tend to lift the head of a corpse in the coffin in order to prevent discolouring of the face. The intestines are packed with millions of micro-organisms that don't die with the person. STAGES OF DECAY Initial decay (Known as 'autolysis') - externally the corpse looks okay, but internally the organs are breaking down. EMBALMING Embalming is the practice of preserving human (or animal) remains. DISPOSAL Decomposition is well under way by the time burial or cremation occurs.