Examples of physical evidence include a document, a hair, fibers, fingerprints, soil, and blood. Class Characteristics are properties of physical evidence that can be associated only with a group and never with a single source.

Review Questions 1. What are the four types of evidence in a criminal investigation? The four types of evidence are physical evidence, documentary evidence, demonstrative evidence, and a testimony which is evidence given by a witness during a trial.

What is the purpose of physical evidence? Physical evidence aids in the solution of a case, provides an element of the crime, such as fear or force, and proves a theory in the case. Physical evidence will either prove or disprove statements of what may or may not have happened.

• Blood, semen, and saliva. These substances are subjected to serological and biochemical analysis for determination of identity and possible origin.
• Documents. Any handwriting and typewriting examined for authenticity or source.
• Drugs.
• Explosives.
• Fingerprints.
• Fibers.
• Firearms and ammunition.
• Glass.

Gathering and preserving evidence is critical for any legal issue. In civil actions, evidence helps a plaintiff prove the extent of his or her losses to secure the most compensation possible. In criminal trials, evidence is what will eventually lead to a conviction or acquittal of the defendant.

There are four phases involved in the initial handling of digital evidence: identification, collection, acquisition, and preservation ( ISO/IEC 27037 ; see Cybercrime Module 4 on Introduction to Digital Forensics).

Evidence will either prove or disprove statements of what may or may not have happened. Forensic scientists will determine the most important information that will assist the most in a case, to help identify criminals and gather enough evidence against them. Any evidence is helpful during an investigation.

evidence cannot stand on its own. Documentary evidence must be authenticated. Much of the evidence you are likely to use in proving a case will be in files, such as log files, database files, and incident-specific files and reports, that provide information indicating what occurred.

In order to ensure the authenticity of electronic evidence, four issues should be paid attention to in the collection of electronic evidence in cybercrime: collect strictly according to law, collect electronic evidence comprehensively, invite electronic experts to participate, and ensure the privacy rights of the …

The most important aspect of evidence acquisition is ensuring that the data is being copied on a storage device that has never been used or has been forensically cleaned. Without a chain of custody, evidence is not admissible in court as the integrity of the evidence can no longer be proven.

No matter how much evidence a crime scene investigator or team compiles, it is imperative that such evidence is properly handled, collected and sealed in order to prevent accusations or risk of improper collection procedures ruling such vital evidence inadmissible in a court of law.

Collecting prints at the crime scene should be every investigator’s top priority. Fingerprints from the suspect as well as elimination fingerprints from the victim will also be needed for comparison (the same holds true for palm and bare footprints).

Tools ​To establish facts and develop evidence, a criminal investigator must use these tools-information, interview, interrogation, and instrumentation. 3.

Prioritize the order of evidence collection. Collect large items first and then proceed to the trace evidence. USE CAUTION WHEN WALKING THE CRIME SCENE. Once the trace evidence is collected via vacuuming, taping, or tweezing, take blood samples, remove bullets, dust for fingerprints, and so on.

Answer Expert Verified. The answer is DNA. There are several ways to obtain DNA samples, like blood, saliva, semen or hair. They are very important to guarantee a certified verification of the people involved with the situation and guarantee the best investigation possible of the event.

7 Steps of a Crime Scene Investigation

• Identify Scene Dimensions. Locate the focal point of the scene.
• Establish Security. Tape around the perimeter.
• Create a Plan & Communicate. Determine the type of crime that occurred.
• Conduct Primary Survey. Identify potential evidence.
• Document and Process Scene.
• Conduct Secondary Survey.
• Record and Preserve Evidence.

There are three stages to a criminal case: the Analysis; the Negotiation; and, if necessary, the Trial. Every case goes through an analysis and a negotiation, but only a minority of cases require a trial.

After making an investigation, the employer is obliged to do something, even if the evidence does not go beyond “he said, she said.” Make a determination of what happened based on what evidence you have, including the credibility of the parties, and act on that determination.