Fingerprint Analysis and Identification

This video tutorial covers the basics of fingerprinting, including classifications, types, and history. It explains the development of latent prints using various powders and chemicals, and discusses methods for preserving and analyzing fingerprints. The video also explores factors affecting fingerprint characteristics and trends, providing a comprehensive overview of the subject.

What are the three main classifications of fingerprints?

• Horizontal, Vertical, Diagonal

• Loop, Arch, Whorl

• Circle, Square, Triangle

• Flat, Curved, Zigzag

Which type of fingerprint is visible due to contact with a liquid?

• Plastic fingerprint

• Digital fingerprint

• Latent fingerprint

• Patent fingerprint

What is the primary purpose of using fingerprint powders?

• To color the surface

• To make latent prints visible

• To clean the surface

• To remove fingerprints

Which type of powder is less messy due to its magnetic properties?

• Gray powder

• Black powder

• Magnetic powder

• Fluorescent powder

What chemical reacts with amino acids in sweat to reveal fingerprints?

• Iodine

• Ninhydrin

• Superglue

• Silver nitrate

Which chemical method involves using fumes from solid iodine?

• Ninhydrin

• Silver nitrate

• Iodine fuming

• Superglue fuming

How can latent prints be preserved for analysis?

• By photographing or lifting them

• By washing them

• By erasing them

• By covering them with paint

What is the primary composition of fingerprints?

• 75% water and 25% solid

• 100% solid

• 50% water and 50% solid

• 99.5% water and 1% solid

Which factor does NOT affect the visibility of fingerprints?

• Ridge structure

• Weather conditions

• Color of the surface

• Age

What trend is observed in women's fingerprints compared to men's?

• Thicker ridges

• More creases

• Fewer creases

• Higher salt levels