(from ” Greek – finger and “logos” – word) – 1) a method of communication for individuals with hearing impairment using symbolic signs made with the fingers of the hands, 2) A manual alphabet used to replace oral speech in communication between deaf and educated individuals and with people familiar with this method. The markings of this method correspond to the letters, So there are several signs in this method, Like the letters in the alphabet of a particular language, they resemble many finger signs, such as printed letters and solid lines (e.g., о, м, п, in Russian, l, m, n, o In English, n, w, m, c. in Arabic). Usually Finger marks are made with the fingers of one hand, But in some English and Arabic speaking countries, hands are used in this method. Which involves joint movements of the fingers of both hands. This method is also used in the initial period of education of deaf children in kindergarten and school as a primary means of developing speech and communication. The importance of this method in the primary education of deaf children is related to its visual nature, which facilitates the perception and reproduction of the deaf, Unlike oral speech.