Objective
In this work, we will complete an implementation of an app on IOS and Android to perform large-scale rapid assessment of onset signs of dementia and record their speech and facial expressions simultaneously. Specifically, we will implement two broad categories of tasks within the app: Current established rapid questionnaire assessment and Assessment tasks for audio-video recording. The app will be designed as quick assessment tool and data collection (include speech, frontal face) medium. The backend server will be provided by the Company. All information will be send via secure method.