Aim: The tongue is the only internal organ well encased within the oral cavity, which can be assessed easily by means of inspection and palpation. The shape and physiologic texture of the tongue remains unique to a person. There are various studies on identification of a person using fingerprint, iris scan, skin color, etc., but these modes of identification could be altered by external factors. Hence, we designed a study to identify a person by using the tongue as an identifying tool through the photographic method. Correlation of morphological parameters of the tongue was done through clinical examination and photographic images. Materials and methods: Total 30 walk-in subjects comprising 15 females and 15 males with an age range 18–65 years were considered in the study. The subjects were analyzed for morphological features of the tongue by clinical examination and the photographic method. Results: Among 30 subjects, 13 cases showed smooth texture of the tongue, fissured tongue was observed in 14 cases, and 3 cases showed mild fissured. Shape of the tongue was found to be hammered in 10 cases; 9 ellipsoid and 11 rounded shapes were observed. Apex of the tongue was sharp in 9 cases and 21 cases showed a rounded appearance. No cases showed a septate shape. Color of the tongue was whitish in 2 cases, 23 cases were pale pink, and 5 cases were pink. Conclusion: To conclude, the tongue could replace the other common biometric tools due to its unique features. Further studies with larger sample and advanced techniques are necessary. Clinical significance: Thus, the tongue could be used as a tool for personal identification by the photographic method.
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