Tactile signing is a tactile communication method used by some children with hearing and vision impairments. The child who is deafblind puts his hand on the maker's hand to see what is being communicated through touch and movement.
This is sometimes called "submission", "manual signing", or "tracking". The characters are based on English Sign Language (BSL) and include a deaf-blind hand alphabet based on the BSL fingerprint alphabet. This method is mainly used by deaf children and adolescents who used BSL as their mother tongue before they lost their sight. If you are looking for details about tactile sign language you may get more info here.
Image Source: Google
Deaf-blind handwritten alphabet
It is also known as the fingertip or tactile alphabet. Again the signer signs each letter of each word and the deaf and mute person puts his hand over the signer to "read" what was said.
The block alphabet is another tactile approach to communication that involves writing words in the palm of a child's hand. The letters are traced on the child's palm with the help of your finger, following the same shape and form as they were written.
The deafblind can choose other communication approaches such as holistic communication, language, sign language, and informal communication.