The study that deals with the scrutiny of sweat pores is known as Poroscopy. They were located as little openings over the frictional ridge skin near the distal end of digits & in palms and soles. The study was conducted in central India among 400first year MBBS students of both sexes within the age limit of 18 to 23. Thumb prints of left hand were taken with Kores printer's ink over the executive bond paper and are then processed with Ninhydrin chemical. The Latent prints thus obtained are cautiously scrutinized using light source microscope. Prints are observed for number of round shaped pores per 1cm ridge and noted carefully. Images were captured with digital camera. Largest number of round shaped pores per cm ridge on left hand thumb impression were ranging from 2-4 were identified among both the sexes. It has also been observed that males presented highest number of circular or round pores with a range of 2-4 in 1cm ridge as compared to females. Thus the poroscopic study based on the shapes of pores in 1cm ridge of thumb prints plays a significant role in sex determination