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700 BCE
Finger Prints
The Chinese began to record thumb prints on clay sculpture and documents despite having no formal classification system was in place. -
250 BCE
Lie Detector
An ancient Greek physician, Erasistratus, created the first lie detector test when he noted that his patients' pulse rate appeared to increase when they lied. -
44 BCE
Autopsy
A Roman doctor examined Julius Caesar's body and discovered that of his 23 stab wounds, only one was fatal. -
1100
Hand Prints
Roman attorney Quintilian proved that blood-covered palm prints were left at a crime scene to frame a blind man for the murder of his mother. -
1248
Autopsy Cont.
The first documentation of medical knowledge aimed at solving crimes was recorded in the book "Hsi Duan Yu" (the Washing Away of Wrong). It detailed the process of distinguishing drowning from strangulation. -
Toxicology
Mathieu Bonaventure Orfila, who is considered the father of modern toxicology, published "Traite des Poisons," and investigators developed successful tissue tests that identified arsenic as a means of murder. -
Portable Polygraph
The Portable Polygraph was invented -
Gunshot Residue
CSI's started doing test to detect GSR(Gunshot Residue). -
Period: to
Modern CSI
Crime Scene Investigation advanced rapidly through the late 1900s and the early 2000s. Modern forensics built technology and expanded their application to include computer forensics, DNA forensics, entomological (insect) forensics and enhanced biological studies.