An artificial intelligence study conducted in collaboration between the University of Edinburgh and the University of Leeds revealed that the surface of our tongue is unique to each individual. Despite research into the taste functions of the papillae, the buds aiding in tasting, speaking, and swallowing on the surface of our tongue, very little is known about the variations in shape, size, and pattern of papillae among individuals. The study indicated that a model developed using machine learning techniques on data obtained from 3D microscopic scans of papillae could be used to identify an individual. The findings are significant for discovering individual food preferences, developing healthier food alternatives, and for the early diagnosis of oral cancers in the future, as well as identifying micron-scale features on other biological surfaces.