Matrix scan: A switch aided screen traversal mechanism for motor disabled

With the advancement in touch based devices these days, new and better options are coming to the fore every day. The increasing penetration of touch-based smart devices into the lives of normal users is an excellent example to portray the importance of such technology among varied user groups. However, the biggest challenge still is to make them cater the needs of everyone and use of latest technology should be possible irrespective of their varying physical abilities. In this proposal the focus is on motor disabled people who do not have much control on their limbs and free movement is very difficult for them. And hence the touch based interface is not a comfortable option for such users, since interacting with such devices requires performing gestures and actions on screen. To meet this challenge a grid-based screen traversal technique is suggested in this paper, which does not require direct contact with interface, but can be controlled using an external switch and minimal movement of limbs.