1. A user device for visually impaired users, the user device comprising: a touch screen configured to: receive touch input from a user; and present a touch-input interface for Braille input comprising a plurality of input regions defined by and separated by input region boundaries, each input region abutting at adjacent input region boundaries and being separated by a centrally-located portal region that is elongated and abuts at least a portion of each input region, wherein the plurality of input regions are configured for Braille input and arranged in rows and columns, and wherein the centrally-located portal region provides an area for dragging a finger as a buffer for selection of the plurality of input regions, such that the finger maintains contact with the touch screen and passes through the portal region while inputting a Braille character by selecting two or more of the plurality of input regions, and wherein contact is maintained until lifting the finger off the touch screen to trigger output of the Braille character based on the selected two or more of the plurality of input regions.
5. The user device of claim 1 , further comprising an input guide coupled over a portion of the touch screen having first physical portions corresponding to the location of the input regions and second physical portions corresponding to the location of the input region boundaries, and wherein the first and second physical portions have different physical characteristics.