Understand What is DMIT. Dermatoglyphics refers to the branch of science in the study of the patterns of skin (dermal) ridges present on the fingers, toes, and soles of humans. It reveals the congenital links between our fingers and our intrinsic qualities and talents. These patterns are formed from the external ectoderm and usually occur during the fetal development stage, The human's fingerprints form is thus formed from the 13th to 21st week.