Sience and technology in crime fighting

1. Fingerprints

1.1. 1. Fingerprints are important to find the identification

1.2. A person’ s fingerprints are swirled patterns on the skin at the tip of the fingers

1.3. Made when someone touches a surface

1.4. They are invisible but visible with special chemicals

1.5. Can find every surfece even clothing plastic bag, or human skin

1.6. The law enforcement angencies all over the world have large collections of fingerprints to aid in crime detection

1.7. Esier to find the crimes’ fingerprints in computer bank if they are founded in crime scene

1.8. But fingerprints sometimes have a mistake to find the criminal

2. Words, blood and insects

2.1. Words

2.1.1. Have their own way of writting letters

2.1.2. Identity wide range of offenders

2.2. Bloodstains

2.2.1. Hit flat surface

2.2.1.1. How far it has faller

2.2.1.2. how fast it has faller

2.2.2. Drops

2.2.2.1. Short distance

2.2.2.1.1. Big and round

2.2.2.2. Falls with greator force

2.2.2.2.1. Small drops

2.2.3. Insects

2.2.3.1. Estimate time of avictim's death

2.2.3.2. How long it takes the insects to break down body tissue

2.2.3.3. Often found in illegal shipments

3. DNA

3.1. Most important recent development in forensic science is the use of DNA for identification from

3.1.1. Drop of blood

3.1.2. Saliva

3.1.3. A strand of hair

3.1.4. skin

3.2. Can help innocent people

3.2.1. Suspect can be eliminated

3.3. A serios invasion of privacy

3.3.1. Without their promission

3.4. Abandoned property

3.4.1. Saliva on a glass in a restaurant

3.4.2. Saliva on a cigaratte on a sidewalk