Augmentative and alternative communication (AAC) devices are tools that help individuals with communication challenges express themselves. These devices can range from simple picture boards to advanced speech-generating devices. They are designed to support people who may have difficulty speaking due to conditions like cerebral palsy, autism, or stroke. AAC devices can be categorized into two main types: unaided and aided communication. Unaided communication relies on the user's body, such as gestures or sign language, while aided communication involves external tools, like tablet apps or communication books. These devices enhance communication and improve the quality of life for users.