The HP WiFi Touch Mouse X7000 is designed to operate without the need of a dedicated USB dongle, instead using your computer's Wi-Fi. The sleek black finish and elegant contour makes it perfect for use with HP Envy notebooks, and it uses a capacitive touch strip style scrolling button instead of the standard scrolling wheel. It also sports a rubber side grip, laser sensor and five programmable buttons, with a dedicated sixth button for instantly accessing and uploading to Facebook. Sensitivity of the touch strip may be adjust as well. The X7000 is only compatible with PC computers running Windows 7, and it is only made for right handers, although it is made up for by its superior 9 month battery life and 30 foot operational range. Released in the fall of 2011, the X7000 comes with batteries and installation software on CD.
what is the cost of hardware for this?
For single-page GUI Commandfusion is free and provides nice user interface design tool with all kind of buttons and gauges.
This solution works quite stable for months already.