Development and Validation of a Smart Phone Based System to Enhance Gait, Cognition and Socialization in Elderly Fallers

Inclusion Criteria: * Ages of 65-85 years * History of 1 fall or more in the year prior to the study. Exclusion Criteria: * Signs of dementia : Montreal Cognitive Assessment (MoCa) \<21 and/or mini mental state examination(MMSE) \<24. * Psychiatric co-morbidities :major depression as determined by Diagnostic and Statistical Manual of Mental Disorders (DSM) IV criteria * Co-existing somatic disorders * History of stroke * Neurologic disorders that interferes with normal walking (e.g., Parkinson's disease or Alzheimer's disease), * Cannot walk without assistance, * Severe head trauma or brain tumor, * Severe hearing or visual loss (determined by the visual acuity test), * Cardio-vascular contradictions (as determined by a physician), * Inability to use a Smart phone because of visual and manual impairment or have unstable medical conditions.