This thesis aims to determine the impact that Augmentative and Alternative Communication (AAC) devices have on social interactions, and then improves the AAC user experience through a user focus design process. AAC devices enable people who cannot speak to communicate with others. Unfortunately, they are tedious to use and make social interaction a dissatisfying experience. The thesis consists of three main studies. The first study focus on gathering information on behaviors of communicative partners, specifically gaze behaviors, of AAC users and how those behaviors impact the users. The second study takes a form of a focus group with people who are experienced with AAC devices. The main discussions on the focus group are to gather ideas about daily interactions of actual AAC users, and brainstorm design ideas for technologies that can improve their interactions with others. Finally, the last study aims to get feedback on prototypes created from ideas in the second study.