Forensic Identification Services

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Forensic Identification Services
Finger Prints

The fingerprints shown in the table below are examples of pattern types as defined in the Henry system of fingerprint classification. This system is named for its inventor, Sir Edward Richard Henry, and has been in use in most of the English-speaking world since the early 20th century. This classification system allows for the searching of unknown fingerprints by classifying each print according to the rules as set out by Henry.

Forensic Identification Services of the Toronto Police used this system for many decades, until the implementation of the AFIS computerized system in 1989. The AFIS classification system is known as "Autoclass" and is based on Henry. The Autoclass system is actually simpler because all patterns from Whorl to Accidental (except the Lateral Pocket Loop), as shown in the table, are classified as Whorls. This is because the system is computerized and thus does not require the same degree of breakdown as is required in a manual system such as Henry.


Arch
Tented Arch

Ulnar Loop (right hand)
Radial Loop (right hand)

Ulnar Loop (left hand) Radial Loop (left hand)

Whorl
Central Pocket Loop

Double Loop
Lateral Pocket Loop

Composite
Accidental