The concept is convincing, the price also. The build quality is good; Even the packaging is designed classy. What, however, somewhat irritated me is that you have to press hard with the pen relative, to be recognized. Once you become accustomed to the correct intensity, can work accurately with the ALPHA Stylus. One is on Touch devices of course also dependent on an intelligent concept of apps to avoid unwanted contacts your hand on the touch display. Here I want to highlight the app "GoodReader 4", where you can go in a contact-insensitive "support surface" in the display, which significantly reduces the risk of incorrect entries.