Falls are extremely common. For persons over the age of 65, 25% will fall in any given year. Falls are the leading cause of accidental death in the elderly. Risk factors for falling include previous history of falling, gait and balance difficulties, lower extremity weakness, cognitive dysfunction, peripheral neuropathy and other conditions. Many non-injurious falls go unreported but they present a significant risk factor for the identification of individuals at risk for subsequent falls. We propose a small installation (less than 10 units) of our fall detection system at Still Hopes retirement community and track both reported falls as well as falls as detected by our system. We will use this data for validation of our system. Gait is felt to be the equivalent of the "next vital sign," as it predicts health care utilization, hospitalization and poor outcomes particularly when the gait speed is slow and declining. Part of our project is also to develop the capabilities to measure gait speed in the home environment.