Nadi Astrology uses your thumb impression to discover your Nadi Leaf and predict your destiny from the readings written as a divine song in a poetic fashion. That is one difference in Nadi Astrology that sets it apart from traditional astrology that requires you to give your birth details. There are around 108 classifications of human fingerprint, and from there, your unique thumbprint is detailed down to find your grouping or bundle that contains anywhere from 20 to 25 individual leaves. Then the Nadi Reader uses the writings inscribed on the leaves to hone in on your exact leaf.