Since this Client is non-verbal it can lead to confusion and the staff at Computer Wise misunderstand what he actually wants. He would greatly benefit from having a better way to communicate key messages with the people around him.

Your task is to design a series of buttons (4-5) that the client could press to indicate his wants and needs. It must play an audible word(s) when pressed corresponding to the message to be conveyed. The device must be mounted to the side of the wheelchair in reach of the client. It must be robust and easy to clean. It must also be easy to understand for the client and easy to install for the staff. It should be easy to change a sound/message if needed by a caregiver.