This Web-Based keyboard works with your mouse. Use the mouse to select letters or numbers. Clicking shift changes the case of the next letter selected. Clicking caps lock toggles whether upper or lower case letters are entered. What's the point of the PowerKey? I'm trying to develop an easy to use, input device for casual data entry using a finger, mouse, pen, stylus or other pointing device. The device may be useful for data entry as part of a handheld computing device or as a wireless data entry/control device in combination with a computer and flat panel or projection display.