A study of fingertip sweat pore in latent fingerprints on paper types using ninhydrin method

Abstract

The aim ofstudy was to classify the shape and number of pores in fingertip for proving incomplete latent fingerprints identify using ninhydrin method. Fingerprints from 10 valunteens including 5 men and 5 women age between 20 to 35 years were printed on 4 different types of papers. They were print paper, newspaper, card printing paper and brown document envelope. The plain fingerprint technique was applied to test the suitable paper, shape and number of sweet pore under light microscope. The results revealed that print paper was the most suitable materials to study the shape and number of sweet pore. The shape found were parallelogram, square, rectangular, trapezoid, triangle, circle and oval. The parallelogram shape was the most found in men (39.27%) and women (49.96%) whilst the ovals shape was the fewest found in both men (0.88%) and women (0.53%). The average number of sweet pore in women (53.35%) had higher number than in men (46.63).The parallelogram, rectangular, triangle, circle and oval shapes and number of sweet pore between genders were significantly different (p< 0.05).