-
700 B.C
The Chinese began using thumb prints on documents and clay sculptures -
250 B.C.
A Greek physician named Erasistratus developed the first lie detector test -
1100
A Roman attorney was able to prove that bloody palm prints were left on purpose to frame a man for murder -
1248
The first book about using medical knowledge to solve crimes was written. It told how to determine if a person was a victim of drowning or if they had been strangled. -
1773
A Swedish chemist figured out how to identify arsenic in corpses -
Mid 1800s
Scotland Yard police began comparing bullets. These were the first ballistics tests -
Late 1800s
Scientists began using body temperature to determine time of death -
1903
New York prisons began using fingerprinting -
1921
The first portable polygraph machine was created -
1960s
The FBI began using psychological profiling -
1980s
DNA typing was developed