We seek to improve the experience of using pen computing devices by augmenting them with haptic, tactile feedback displays. We present the design of the haptic display for pen computers, and explore interaction techniques that allow users to feel GUI elements, textures, photographs and other interface elements with a pen. We discuss research directions in haptic displays for pen devices and report results of an early experimental study that evaluated the benefits of tactile feedback in pen computing. Author Keywords pen input, haptic feedback, experimental studies, Fitt’s law ACM Classification Keywords H5.2. [Information interfaces and presentation (e.g., HCI)]: User interfaces – Graphical user interfaces (GUI), Input devices and strategies, Interaction styles, Screen design.