Samudrika Shastra is a part of the Vedic tradition.Many people in the vedic ages, utilized this knowledge for studying the human face, body features,body aura etc. This tradition assumes that every natural or acquired bodily mark, encodes its owner's psychology and destiny. Elevation, depression, elongation, diminution, and other marks become relevant. There are five main types of human elements in terms of the Samudrika: Agni(Fire), Vayu(Air), Jal(Water), Akash(Sky,Space) and Prithvi(Earth).
Which are the authentic texts, for understanding Samudrika Shastra?