Abstract
There are lots of factors to classify the disability of a person. These factors are personal, environmental and product factors. Wheelchairs, as a assistive product, have impact factor to ease the life or contribute to the disability. This research is about learning the product factors for human disability and presents a summary of the process of a product design and directions for future research. First part gives information about literature review on disability, product factor on disability and wheelchairs. Second part is about introduction of a case study project about a wheelchair and its research process.
