Fingerprint characteristics are primarily classified based on:

Fingerprint characteristics are categorized primarily by their visual appearance and ridge patterns. This classification system is rooted in the unique structures found in each person's fingerprints, which include specific arrangements and types of ridges.

The visual appearance of fingerprints refers to the overall look and design when pressed onto a surface. Ridge patterns, on the other hand, can be further divided into various types such as loops, whorls, and arches, each possessing distinct formation rules and characteristics. These patterns are critical for identification purposes, as no two individuals share the same fingerprint patterns, making them a reliable biometric identifier.

Understanding the significance of ridge patterns allows forensic experts to analyze and compare fingerprints effectively during crime scene investigations. This classification directly supports the field of forensic science in establishing identity and linking individuals to crime scenes or activities.