In this thesis accessibility problems with websites for vision-impaired persons are discussed in detail. General accessibility problems and those specific to e-commerce websites,especially on-line shopping websites are discussed. Accessibility problems are examined from the perspective of a screen reader user. As a solution to the accessibility problems identified, the WCAG 2.0 guidelines are reviewed and new changes are proposed to improve the existing guidelines. Enhanced solutions using tactile media capable of providing a better web browsing experience for vision-impaired persons are also discussed.

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Social Networking applications have gained immense popularity amongst students in the last few years. Unfortunately, all such services currently require internet connectivity which inhibits their usefulness when a person is on the move. In this paper we describe a mobile platform, Marauder's Map which enables social networking on the go, by allowing users to keep track of their friends and their activities in a peer to peer fashion using a novel human-based social network routing protocol.