Fingerprint

Fingerprint

A fingerprint is an impression left by the friction ridges of a human finger. The recovery of partial fingerprints from a crime scene is an important method of forensic science. Moisture and grease on fingers result in fingerprints on surfaces such as glass or metal.

Characteristics

Fingerprints are typically formed from the epidermis layer of the skin. They are unique to each individual and do not change over time, making them a reliable tool for identification. The three basic patterns of fingerprint ridges are the arch, loop, and whorl.

Arch

An arch is a pattern where the ridges enter from one side of the finger, rise in the center forming an arc, and then exit the other side of the finger.

Loop

A loop is a pattern where the ridges enter from one side of a finger, form a curve, and tend to exit from the same side they enter.

Whorl

A whorl is a pattern of spirals or concentric circles.

Uses

Fingerprints are used in numerous fields, primarily for the purpose of identification. They are commonly used in forensic science to identify suspects in a crime. They are also used in biometric technology for secure access to devices and systems.

History

The use of fingerprints for identification has been employed in many cultures throughout history. The ancient Babylonians used fingerprints on clay tablets for business transactions. In the modern era, the systematic use of fingerprints in criminal investigations began in the late 19th century.

See also

• Forensic science
• Biometrics
• Dermatoglyphics

Fingerprint Resources
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