⟩ What is augmentative and alternative communication?
For communication among speech unable person, augmentative and alternative device is used. It decipher the signals made by hand, eyes, picture, body language, etc. Augmentative and alternative communication includes both aided and unaided system. Aided system includes books and special computers, picture charts, etc. Unaided system includes gestures and signing. AAC methods may be personalized to meet each individual's needs.