Using TapSense, styluses with tips made from different materials can be assigned to draw different colors
Small touchscreen devices such smartphones certainly have their attractions, but they also have one drawback – there isn’t much room on their little screens for touch-sensitive features. This means that users will sometimes instead have to go into sub-menus, or make do with jabbing their fingers at tiny controls. Researchers at Carnegie Mellon University’s Human-Computer Interaction Institute, however, are working on an alternative. Their prototype TapSense system can differentiate between screen taps from different parts of the finger, and will perform different tasks accordingly.