Procedure in classifying a set of prints 1. Determine the pattern of each finger of both thumbs 2. Block the prints by designating the respective symbols Blocking is the process of writing below each pattern the corresponding symbol of the fingerprint pattern in the space provided in the card Count and trace the pattern as applicable

Obtain the primary classification Summation of the numerical values of the whorl plus 1/1 Denominator Total numerical value of fingers in the odd fingers plus 1 1,3,5,7,9 Numerator Total numerical value of fingers in the even fingers plus 1 2,4,6,8,10

Fingers 1&2 3&4 5&6 7&8 9&10 Numerical Value 16 8 4 2 1

Indicate the secondary classification Represents the type of pattern that appears in: Index finger symbolized by capital letters Thumb, middle and ring finger symbolized by small letters Numerator-right hand Denominator-left hand

Capital Letters A T R U W C X D Plain Arch Tented Arch Radial Loop Ulnar Loop Plain Whorl Central Pocket Loop Accidental Whorl Double Loop

Small Letters a t r Plain arch Tented arch Radial loop

Indicate the Sub-Secondary Classification Designation of the ridge count and tracing in the index, middle and ring finger In whorl patterns: I (inner whorl)‏ M (meeting/meet whorl)‏ O (outer whorl)‏ In arch patterns: Represented by a dash (-)‏

Index finger Middle finger Ring finger 1-9 = I 1-10 = I 1-13 = I In loop patterns: Represented by I (inner) and O (outer)‏ Index finger Middle finger Ring finger 1-9 = I 1-10 = I 1-13 = I 10 above = O 11 above = O 14 above = O

Indicate the major classification Ridge counting the loops and ridge tracing the whorls appearing in the thumbs of both hands Denominator-left thumb Numerator-right thumb If whorl patterns appear on both thumbs, use the symbol for ridge tracing I (inner whorl)‏ M(meeting/meet whorl)‏ O (outer whorl)‏

If the ridge count for the left thumb is 1-16 apply the table for both thumb: 17 above = L If the ridge count for the left thumb is above 17, apply the table for the right thumb: 1-17 = S 18-22 = M 23 above = L

If there is a combination of ridge tracing and counting applied, they are designated by respective symbols of SML and IMO

Indicate the Final Classification The ridge count of the loops and whorls appearing in both little fingers Written at the extreme right of the classification formula Denominator – left little finger Numerator – right little finger

Indicate the key classification Derived by ridge counting the first loop May come from the right thumb or any other finger except the little fingers Written at the extreme left of the classification formula If there is no loop, then the first whorl is treated as an ulnar loop for ridge counting If there is no loop or whorl, a dash (-) is placed