People with disabilities meet barriers of all types. However, assistive technology is helping to lower many of these barriers. By using assistive technology for tasks such as reading and writing documents, communicating with others, and searching for information on the Internet, people with disabilities are capable of handling a wider range of activities independently. Navigation in new environments is highly challenging for the severely visually challenged people. Assistive technologies are helping to overcome this problem. Alarge number of people are aware of assistive technologies, even though many of them are not aware of it. Assistive technology requires internet resources to assist visually challenged people. This paper describes the best tools and practices in information technology to support visual challenged people in their activities such as mobility systems, computer games, accessibility of e-learning, web-based information system, and wearable finger-braille interface for navigation. The purpose of this paper is to define and elucidate the various assistive technologies for visually challenged people.
