Abstract: A method and system for remote control of a desktop computer from a hand held mobile device having a display. A desktop screen image is split into regions, showing a part of a region on the screen of the mobile device. A virtual trackball is provided which includes a location button and trackball button. The location button operates as a virtual mouse which can be used to click on hotspots and when the virtual mouse cursor is about to cross the boundary of screen regions the next available screen region will smoothly slide onto the device screen. The trackball button is useable to switch between hotspots which can be identified through local image analysis.

Abstract: A method for providing and using a touch screen to enter letters or symbols which form a desired word entry input to a smart mobile device includes a touch screen display configured to display one of a plurality of regions of a replicated standard keyboard display. Key buttons are displayed in the one of the plurality of regions to provide a key button size substantially similar to at least half the size of an average human finger.