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Fingerprints form three general patterns: whorl (circular), loop, and arch. Within those patterns are found many types of lines with their own names. For a list of those names and a description of what they are, visit the Related Link.

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How are fingerprint matches determined?

Fingerprint matches are determined by comparing the unique patterns of ridges, loops, and whorls on a fingerprint found at a crime scene with a known fingerprint in a database. Experts analyze these patterns to see if there is a sufficient level of similarity and agreement between the two prints to establish a match. This process, called automated fingerprint identification, is highly accurate and widely used in forensic investigations.


What is a delta of a fingerprint?

The delta of a fingerprint is a pattern that occurs when the ridges of the fingerprint split to form branches. These branches are usually located at specific points within the fingerprint and can be used in fingerprint analysis for identification purposes.


How does the fingerprint reader work?

A fingerprint reader captures an image of a person's fingerprint and converts the unique patterns into a digital code. When a person places their finger on the reader, it compares the captured fingerprint with stored fingerprint patterns to verify identity. If the patterns match, access is granted.


What is the sticky thing called that detectives use to lift fingerprints?

The sticky thing that detectives use to lift fingerprints is called a fingerprint tape or lifting tape. It is a clear adhesive tape that is pressed onto a surface to lift and preserve the fingerprint for analysis and identification.


What divice is used to identify a person by a finger print?

A fingerprint scanner is the device typically used to identify a person by their fingerprint. It captures the unique patterns in an individual's fingerprint and compares it to a database of stored prints to verify identity.