For all the friends who use touch-screens, I believe that you must have experienced problems of using the pen. You had painful experience to use your fat finger on the screen to hit a small button. Or, you may, like me, dislike of the finger and take the pain to pull out the pen each time, and left no vacant hand to pick up the telephone. Is there any way to let our fingers to work the same as the pen? Shift is the Microsoft technology that allows you to select targets easily on a small touchscreen. The theory is simple : when the finger touches the screen, if the targets are large buttons, then it uses direct execution. If the targets are small, then it would display a magnifying glass, and let the fingers "fine tuned" to decide which button to press after the implementation of action. This will help to maintain the original operating speed, positioning it so that the small button can be easily manipulated. We do not know if Shift have the opportunity to be added the Windows Mobile platform or not in the future? You can see the actual operation of Shift in the film, and the Microsoft XP official website has the actual Demo! BTW, how does Apple's iPhone solve this problem? Translation by Shengdong Zhao http://www.dgp.toronto.edu/~sszhao