The sign language is a form of visual communication used by deaf people or hearing impaired. Is a language all of the effectswith its own grammar and syntax, which uses the hands, the face and the body to express ideas and concepts. In many countries, the sign language is recognized as an official language and there are many organizations that are dedicated to the promotion of sign language and the training of professional interpreters. Thanks to the sign language, deaf people can communicate effectively and participate fully in the social life, cultural and economic of the community.