Tag: Crime Detection
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Surveillance
Crime Detection Surveillance Introduction to Surveillance One of the oldest ways of detecting criminal activity is through surveillance. This method is used when it is likely that a crime will take place at a specific location or when certain persons are suspected of criminal activit…
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Surveillance
Crime Detection Surveillance Introduction to Surveillance One of the oldest ways of detecting criminal activity is through surveillance. This method is used when it is likely that a crime will take place at a specific location or when certain persons are suspected of criminal activit…
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Criminal Investigation
Crime Detection: Scientific Crime Investigation Mineralogical InvestigationsIntroduction to Crime Mineralogical InvestigationsThe science of mineralogy is also used in crime detection. The mineralogist studies soil, plaster, cement, brick, concrete, and glass for any evidence. Mine…
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Scientific Crime Investigation
Crime Detection: Scientific Crime InvestigationIntroduction to Scientific Crime InvestigationIn recent times, science has provided substantial aid to crime detection. Because anything in the physical universe has the potential of becoming an item of evidence in an investigation, a …
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Serological Investigations
Crime Detection: Scientific Crime Investigation Serological InvestigationsIntroduction to Serological InvestigationsSerology in its broad sense is the study of body fluids in relation to sickness and its treatment. In crime detection, serological procedures are applied to the ident…
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Interrogation
Crime Detection: InterrogationIntroduction to InterrogationThe information needed to further an investigation must be obtained from people who have some significant knowledge concerning the crime. Witnesses or victims are interviewed, and suspects are interrogated. Eyewitnesses to …
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Investigation Toxicology
Crime Detection: Scientific Crime Investigation ToxicologyIntroduction to Investigation ToxicologyToxicology may be defined as the science of poisons (see Poison). Special methods of analytical chemistry have been developed for use in toxicological examinations. The problem of sepa…
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Hairs and Fibers Crime Investigation
Crime Detection: Scientific Crime Investigation Hairs and FibersIntroduction to Hairs and Fibers Crime InvestigationA piece of hair or a few strands of fiber, when compared with known specimens, may prove valuable in solving a case. For example, a fiber found on a cut screen at the…
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Firearms Examinations
Crime Detection: Scientific Crime Investigation Firearms ExaminationsIntroduction to Firearms ExaminationsFirearms are identified through microscopic imperfections that are produced inadvertently in gun barrels during manufacture. Subsequent use and wear contribute further to a wea…
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Crime Detection History
Crime Detection Historical BackgroundIntroduction to Crime Detection HistoryEarly criminal investigation was a crude process, relying on eyewitnesses, inferences, and confessions extracted under torture. In early 19th-century France, for instance, the principal technique for catchi…
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Crime Detection Records
Introduction to Crime Detection RecordsCriminal records represent an important data base for police activities throughout the U.S. and the world. Each time an arrest is made, the suspect is fingerprinted (see Fingerprinting) in multiple copies; a copy is sent to the state identification sys…
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Crime Document Examination
Crime Detection: Scientific Crime Investigation Document ExaminationIntroduction to Crime Document ExaminationDocument examination consists largely of comparing questioned handwriting with known handwriting to determine the writer's identity; it also includes the examination of…
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Crime Metallurgical Investigations
Crime Detection: Scientific Crime Investigation Metallurgical InvestigationsIntroduction to Crime Metallurgical InvestigationsMetallurgical examinations make it possible to identify the source of an item-whether made of metal, plastic, ceramic, or other material-found at a crime sc…