Tactile sign language is a form of communication used primarily by individuals who are both deaf and blind. It involves using touch to convey messages, where one person signs into the hand of another. This allows the receiver to feel the shapes and movements of the signs, making it possible for them to understand the conversation. In tactile sign language, the signer may also use other methods, such as placing their hands on the receiver's body to indicate emotions or concepts. This form of communication is essential for fostering connections and ensuring that individuals like Helen Keller can engage with the world around them.