Today, the religious, regional tattoos are disappearing. In traditional tribes, tattoos have lost the sense of exclusive ritual; in urban society and Western lifestyle, tattoos are no longer marginal identity, it is only a universal body decoration.
The custom of tattoo originated from the custom of skin tattoo of primitive tribes all over the world. That is, after the operation in a certain part of the body to leave an indelible pattern. Patterns include birds, animals, flowers or totems, scriptures, eight trigrams, etc. Their aesthetic consciousness and religious ideas are reflected.
Source: @davide_dak_controguerra