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1248: A Chinese book, Hsi Duan Yu (the washing away of wrongs), contains a description of how to distinguish drowning from strangulation. This was the first recorded application of medical knowledge to the solution of crime.

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1248: A Chinese book, Hsi Duan Yu (the washing away of wrongs), contains a description of how to distinguish drowning from strangulation. This was the first recorded application of medical knowledge to the solution of crime.

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It finally means that there can be a destinguishment between causes of death which has since been used.

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1810: The first recorded use of question document analysis occurred in Germany. A chemical test for a particular ink dyewas applied to a document known as the Konigin Hanschritt.

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1810: The first recorded use of question document analysis occurred in Germany. A chemical test for a particular ink dyewas applied to a document known as the Konigin Hanschritt.

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It made it possible to see detect writing that has been erased.

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1828: William Nichol invented the polarizing light microscope.

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1828: William Nichol invented the polarizing light microscope.

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it is the beginning on more modern light polarizing microscopes that we still use today.

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1835: Henry Goddard, one of Scotland Yard’s original Bow Street Runners, first used bullet comparison to catch amurderer. His comparison was based on a visible flaw in the bullet which was traced back to a mold.

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1835: Henry Goddard, one of Scotland Yard’s original Bow Street Runners, first used bullet comparison to catch amurderer. His comparison was based on a visible flaw in the bullet which was traced back to a mold.

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these comparisons are still used today which made it easier to match bullets or casings to a serialized number sush as a box of ammo and changed the industrialization of ammo.

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1856: Sir William Herschel, a British officer working for the Indian Civil service, began to use thumbprints on documents both as a substitute for written signatures for illiterates and to verify document signatures.

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1856: Sir William Herschel, a British officer working for the Indian Civil service, began to use thumbprints on documents both as a substitute for written signatures for illiterates and to verify document signatures.

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thumbprints are now used as an identification for multiple types of application specifically important documents relative to the government

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1864: Odelbrecht first advocated the use of photography for the identification of criminals and the documentation of evidence and crime scenes.

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1864: Odelbrecht first advocated the use of photography for the identification of criminals and the documentation of evidence and crime scenes.

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pictures of criminals are being documented. This is used to identify criminals who might of had a prior or have even been incarcerated

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1880: Henry Faulds, a Scottish physician working in Tokyo, published a paper in the journal Nature suggesting thatfingerprints at the scene of a crime could identify the offender. In one of the first recorded uses of fingerprints to solvea crime, Faulds used fingerprints to eliminate an innocent suspect and indicate a perpetrator in a Tokyo burglary.

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1880: Henry Faulds, a Scottish physician working in Tokyo, published a paper in the journal Nature suggesting thatfingerprints at the scene of a crime could identify the offender. In one of the first recorded uses of fingerprints to solvea crime, Faulds used fingerprints to eliminate an innocent suspect and indicate a perpetrator in a Tokyo burglary.

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This is one of the ways to identify individuals to this day weather they have or haven't committed a crime. It can ither prove the innocence of someone or find a perpetrator.

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1889: Alexandre Lacassagne, professorprofessor of forensic medicine at the University of Lyons, France, was the first to try to individualize bullets to a gun barrel. His comparisons at the time were based simply on the number of lands and grooves.

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1889: Alexandre Lacassagne, professorprofessor of forensic medicine at the University of Lyons, France, was the first to try to individualize bullets to a gun barrel. His comparisons at the time were based simply on the number of lands and grooves.

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This makes it easier to determine what make or model gun was used based on the barrel itself which has now evolved to turn rate, width, and how deep the grooves are in a bullet.

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1898: Paul Jesrich, a forensic chemist working in Berlin, Germany, took photomicrographs of two bullets to compare, and subsequently individualize, the minutiae.

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1898: Paul Jesrich, a forensic chemist working in Berlin, Germany, took photomicrographs of two bullets to compare, and subsequently individualize, the minutiae.

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It compares two bullets for very fine details such as deformities or parts of a finger print which can be compared to a gun if available.

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1901: Henry P. DeForrest pioneered the first systematic use of fingerprints in the United States by the New York Civil Service Commission.

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1901: Henry P. DeForrest pioneered the first systematic use of fingerprints in the United States by the New York Civil Service Commission.

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fingerprints are now becoming the implemented way of solving crimes in the U.S.A.

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1903: The New York State Prison system began the first systematic use of fingerprints in United States for criminal identification.

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1903: The New York State Prison system began the first systematic use of fingerprints in United States for criminal identification.

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being used to this day it can identify criminals who have been incarcerated before or have documents with their fingerprints.

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1905: American President Theodore Roosevelt established Federal Bureau of Investigation (FBI).

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1905: American President Theodore Roosevelt established Federal Bureau of Investigation (FBI).

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One of the most powerfull goverment agencies which is used in any application to keep the american public safe from crime and terrorism.

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1918: Edmond Locard first suggested 12 matching points as a positive fingerprint identification.

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1918: Edmond Locard first suggested 12 matching points as a positive fingerprint identification.

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matching fingerprints has become more precise with individualizing it and finding a matching print easier.

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1920: Charles E. Waite was the first to catalog manufacturing data about weapons.

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1920: Charles E. Waite was the first to catalog manufacturing data about weapons.

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this made most agencies able to see documents on the manufacturing of firearms which can help with the identification of ammo or parts.

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1921: John Larson and Leonard Keeler designed the portable polygraph.

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1921: John Larson and Leonard Keeler designed the portable polygraph.

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the portable polygraph is still being used to day with many improvements made and yet to come.

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1954: R. F. Borkenstein, captain of the Indiana State Police, invented the Breathalyzer for field sobriety testing.

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1954: R. F. Borkenstein, captain of the Indiana State Police, invented the Breathalyzer for field sobriety testing.

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revolutionized law enforcement's ability tomeasure blood alcohol levels in individuals suspected of drunk driving, providing a scientifically method for assessing impaired driving and significantly enhancing road safety by reducing the incidence of alcohol-related accidents.

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1974: The detection of gunshot residue (GSR) using scanning electron microscopy with electron dispersive X-rays (SEMEDX) technology was developed by J. E. Wessel, P. F. Jones, Q. Y. Kwan, R. S. Nesbitt and E. J. Rattin at Aerospace Corporation.

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1974: The detection of gunshot residue (GSR) using scanning electron microscopy with electron dispersive X-rays (SEMEDX) technology was developed by J. E. Wessel, P. F. Jones, Q. Y. Kwan, R. S. Nesbitt and E. J. Rattin at Aerospace Corporation.

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can now trace any amounts of powder recedue on a victims or perpetrators skin or article of clothing.

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(1977): The FBI introduced the beginnings of its Automated Fingerprint Identification System (AFIS) with the first computerized scans of fingerprints.

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(1977): The FBI introduced the beginnings of its Automated Fingerprint Identification System (AFIS) with the first computerized scans of fingerprints.

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scanning or finding fingerprints is much faster and less labor intensive and space is now reduced compared to files and files of individual fingerprints. also helped with the sharing and distribution of data today.

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1992: The FBI contracted with Mnemonic Systems to developed Drugfire, an automated imaging system to compare marks left on cartridge cases and shell casings. The ability to compare fired bullets was subsequently added.

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1992: The FBI contracted with Mnemonic Systems to developed Drugfire, an automated imaging system to compare marks left on cartridge cases and shell casings. The ability to compare fired bullets was subsequently added.

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compairing ammo is now easier and more reliable as now it can be ammo that has been fired which can link different crime scenes to the same firearm.

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1999: The FBI upgraded its computerized fingerprint database and implemented the Integrated Automated Fingerprint Identification System (IAFIS), allowing paperless submission, storage, and search capabilities directly to the national database maintained at the FBI.

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1999: The FBI upgraded its computerized fingerprint database and implemented the Integrated Automated Fingerprint Identification System (IAFIS), allowing paperless submission, storage, and search capabilities directly to the national database maintained at the FBI.

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long term storage is possible and the sharing of data between different agencies is faster and easier.