In Canada, the proportion of adults over 65 years old with dementia was 9.2% in 2014, representing 564,000 people. This number is estimated to rise to 937,000 people in 2031. Dementia care cost Canada $20.9 billion per year. Accurate identification/predictions may help in dementia care and decreasing its costs. In this project we aim to collect data on physical movements of elders with dementia by monitoring their daily activities in-home continuously and develop an intelligent system, called AID, to detect/predict risk of dementia among elders.