Henry Classification System of Fingerprints With Practical Worksheet | 6+3 Classifications

Introduction to Henry Fingerprint Classification System

In this section, the speaker introduces the topic of the video and highlights what will be covered.

Main Highlights of the Presentation

• The original Henry classification system will be discussed.

• The six divisions and three extensions used by the FBI will be demonstrated in detail.

• Modified versions of the Henry system used by various federal agencies will be listed.

• A calculator for calculating primary classification value will be provided.

• Embedded fingers and their classification in the Henry system will be explained.

Overview of Henry Fingerprint Classification System

This section provides an overview of the Henry fingerprint classification system.

Six Divisions in Henry Classification

• The FBI modified Henry fingerprint classification system has a total of 60 reasons.

• There are six divisions: primary, sub-secondary, major, final, key, and secondary.

• The image shown represents this system starting with key followed by major, primary, secondary, sub-secondary, and final.

Three Extensions Used by FBI

• Three extensions are extensively used by FBI: second sub-secondary, WCDX extension (used for walls), and special loop pattern (used when all ten fingers have loop patterns).

Original Henry Classification System

• Developed by Sir Edward Richard Henry in 1896

• Uses all ten fingers

• Only four major divisions: primary, subsecondary, secondary and final

• Rest of two or three extensions added later by FBI to simplify search process

Calculator for Primary Classification Value

This section explains how to calculate primary classification value using a calculator provided in the video.

Using Calculator for Primary Classification Value

• A calculator is provided that can calculate primary classification value for any 10-digit card.

FBI Modified Henry Fingerprint Classification System

This section provides a detailed explanation of the FBI modified Henry fingerprint classification system.

Six Divisions in Henry Classification

• The FBI modified Henry fingerprint classification system has a total of 60 reasons.

• There are six divisions: primary, sub-secondary, major, final, key, and secondary.

• The image shown represents this system starting with key followed by major, primary, secondary, sub-secondary, and final.

Three Extensions Used by FBI

• Three extensions are extensively used by FBI: second sub-secondary, WCDX extension (used for walls), and special loop pattern (used when all ten fingers have loop patterns).

Original Henry Classification System

This section explains the original Henry classification system.

Original Henry Classification System

• Developed by Sir Edward Richard Henry in 1896

• Uses all ten fingers

• Only four major divisions: primary, subsecondary, secondary and final

• Rest of two or three extensions added later by FBI to simplify search process

Why Other Federal Agencies Use Modified Versions of the System

This section explains why other federal agencies use modified versions of the Henry fingerprint classification system.

Complexity of Original System

• In the original system an examiner had to perform 10 more comparisons manually which was complex and time-consuming.

• In 1900s there were no computerized systems which made it harder to find a single fingerprint in the database.

• When the database reaches one million it becomes practically inefficient to manage because of complexity.

Fingerprint Classification Systems Originated from FBI

This section lists various fingerprint classification systems originated from FBI.

List of Fingerprint Classification Systems Used by Various Federal Agencies

• There are currently 12+ systems used by various federal agencies for personal identification.

• The list can be found on forensicreader.com titled with Henry Fingerprint Classification System.

Rules of Filling FBI Card

This section explains the rules of filling an FBI card.

Rule 1: Writing Pattern Type

• Pattern type is written at the middle bottom.

• Rich count and rich trace value sit at the top right corner.

Rule 2: Destination for Index Finger

• Designated by capital letters except loops.

Conclusion

In this section, the speaker concludes the video and summarizes what was covered.

Summary of Topics Covered

• Introduction to Henry fingerprint classification system

• Overview of Henry fingerprint classification system

• Calculator for primary classification value

• FBI modified Henry fingerprint classification system

• Original Henry classification system

• Why other federal agencies use modified versions of the system

• List of fingerprint classification systems originated from FBI

• Rules of filling an FBI card

Fingerprint Classification System

In this section, the speaker discusses the rules for designating fingerprints and provides an overview of the Henry Fingerprint Classification System.

Designation of Al-Nunlu

• Fingerprints are designated by left slant or right slant loops, also called forward and backward slashes.

• Rule number four defines the designation of al-nunlu.

Representation of Data on Fingerprint Card

• Values of patterns are written at the bottom of the print, while stress values are written at the top right corner.

• Unknown loops use left slant or right slanted lines.

• The process of filling information on a card is called blocking.

Six Divisions and Three Extensions of Henry Fingerprint System

• The six divisions and three extensions make up the nine components discussed in this section.

• Primary classification is used to classify fingerprints, starting with primary division value.

• Patterns only use one pattern, making it a world classification system.

• All fingers are used for third and fourth finger values based on appearance.

Procedure for Primary Classification

• Primary values with respect to words must be found first.

• Even finger number values rest in numerator while odd finger number values rest in denominator after addition.

• Total possible outcomes is 1024 with highest possible card value being 32 by 32 where all fingers have wall pattern.

Practice for Primary Classification

1. Find primary values with respect to words based on their appearance in a 10-digit card.

2. Add even finger number values separately from odd finger number values.

3. Add both sums together then add one to get primary classification value.

Overall, this section provides an overview of fingerprint classification systems and how they work. It covers important concepts such as the designation of fingerprints, representation of data on fingerprint cards, and the six divisions and three extensions of the Henry Fingerprint System. The primary classification procedure is also discussed in detail with a practice example provided.

Primary and Secondary Classification

This section explains the primary and secondary classification values used in fingerprint analysis.

Primary Classification

• The final denominator value is 25.

• The primary classification value is represented by n/25, where n is an even or odd number.

• All patterns on index fingers are used to calculate the primary classification value.

Secondary Classification

• Index fingers are used as a secondary classification value and are designated by capital letters.

• The most common patterns used in secondary classification are plain arch (A), tented arch (T), radial loop (R), ulnar loop (U), and whorl (W).

• Non-common patterns include central pocket loop, double loop, and accidental whorl.

• Right index pattern values go into the numerator, while left index pattern values go into the denominator.

• The five common patterns considered in secondary classification are plane arch, standard arch, right slant loop, left slant loop, and whorl.

Small Letter Grouping in Secondary Classification

This section explains small letter grouping in secondary classification.

• Small letters are used to name the patterns on their respective finger for small letter grouping in secondary classification.

• Some authors group them in secondary while some consider them as part of sub-secondary division.

• Patterns that appear on other than index fingers are designated by small letters.

• When using small letter grouping with secondary both subsecondary and major division is omitted after.

Loops and Small Letter Grouping

In this section, the speaker explains the rules for using hyphens to represent loops and walls in fingerprints. They also discuss small letter grouping and how to identify patterns.

Rules for Using Hyphens

• Use a hyphen when there is an absence of atr in a loop or wall.

• Omit first and last fingers with loops and walls.

• Use a single dash to represent two in-between loops or walls.

Small Letter Grouping

• Identify patterns for small letter grouping.

• Write small letters based on corresponding values assigned to each finger.

• Write with secondary number numerator and denominator values.

Sub Secondary Classification

In this section, the speaker discusses ridge counting, tracing, and letter designation for loops in sub secondary classification.

Ridge Counting and Tracing

• Index, middle, and ring fingers are included in ridge counting.

• Numerical values are assigned based on corresponding words.

• Letter designation is given based on whether ridges face forwards or backwards.

Letter Designation for Loop Counting

• Three sets of values are used for index, middle, and ring fingers respectively.

• Inner value ranges from 1 to 9 or 1 to 13 depending on the finger.

• Outer value ranges from 9+ or 10+ depending on the finger.

Practice Set

In this section, the speaker provides a practice set for sub secondary classification and demonstrates how to calculate values based on ridge counting and tracing.

• Use ridge counting and tracing to calculate values for right and left hand fingers.

• Identify patterns in the candidate card.

• Calculate values using numerator and denominator rules.

Fingerprints Classification

In this section, the speaker explains the rules for fingerprints classification. The major division classification and its rules are discussed in detail.

Major Division Classification Rules

• Fingers patterns on thumb are used.

• Pattern types are loops and whorls.

• Values rich count or trace values for the loops and whorls are used.

• If small letter group is used, major division and sub-secondary division is omitted out.

Major Division Values

• Inner values go from 0 to 2 for inside and outside of the right delta.

• Inner values three or more inside the right delta and for o three or more outside the right yield.

• For left thumb, there are three values: small (1 to 11), medium capital M (12 to 16), large capital L (17 or more).

• For right thumb, there are two sets of value if the rich count of the left thumb is 16 or less we use the same value. If it's greater than that, we use case number 2.

Practice Set for Major Division

• Two practice sets were given to help understand major division and their special cases.

Final Classification Rules

• Little fingers of one hand is used patterns loops, if loops are missing whorls are used.

• Numerator is given by the right-hand value and denominator is given by the left-hand value.

• Pointer number six is preference here; if right finger doesn't have a loop then we seek patterns on the left little finger lastly in case when loops absent on both little fingers then we use word they're treated as underloop so for walls on

the right hand counted from left delta to go and for left hand ridge counts made from right delta to co at last if the loops and walls are absent so in case when there is neither the loops and nor the walls in that case, there is no final classification.

Final Classification Practice Session

• For final classification, only little fingers are used.

Fingerprint Classification

In this section, the speaker explains the key classification of fingerprints and how it is represented in the handy classification.

Key Classification

• The value for the final goes into the denominator side of the handy classification.

• The first loop that appears on the card represents the key value.

• Little fingers are not included in key values as they are already included in the final.

• The value for key classification is 18.

Second Sub Secondary Classification

• The most common extension used by FBI.

• Values of second sub secondary go above subsequently classification.

• Index, middle, and ring fingers are used for this classification.

• Numerator values use right hand values while denominator uses left hand values.

WCDX Extension

• All fingers are used for this extension.

• Numerator uses right hand finger values while denominator uses left hand finger values.

• Capital and small letter values are used for both patterns and values.

Spatial Loop Extent

• Index, middle, and ring fingers are used for numerator with left little fingers also employed in some cases.

• Right-hand finger values are used for numerator while left-hand finger values are used for denominator.

• Loops are used to determine pattern.

Calculator and Table of Contents

In this section, the speaker introduces a website called currencygrader.com that provides a fingerprint classification system. The speaker explains how to access the calculator and table of contents on the website.

Accessing the Calculator

• To access the calculator, click on the link provided by currencygrader.com.

• Hover over to the table of contents and select the first section.

• The calculator will be available in this section.

Filling Out Fingerprint Cards

• Section 2 provides information on how to fill out a 10-range fingerprint card.

• Follow the instructions provided in this section to ensure accurate completion of fingerprint cards.

Agencies Using Henry Modified Version

• Section 3 provides a table listing various agencies that use Henry modified version for fingerprint classification.

Worksheets

• Sections 5.2 to 5.8 provide worksheets for using Henry classification system.

• Follow the link in notes section to access these worksheets.

Presentation Slides

In this section, the speaker discusses where to find presentation slides related to Henry classification system.

Accessing Presentation Slides

• Section 6 provides presentation slides related to Henry classification system.

• Follow the link in notes section to access these slides.

Conclusion and Subscription

In this final section, the speaker concludes by summarizing what was covered in previous sections and encourages viewers to subscribe if they found it helpful.

Summary

• The speaker hopes that their illustrations helped viewers understand Henry classification system.

• If there are any questions, viewers can ask them in comment section.

Subscription

• Viewers are encouraged to subscribe if they found the presentation helpful.