In this presentation, we introduce a simple device called Haptic Adapter that generates tactile feedback for fingers during touch panel operation. Using a couple of prototypes of Haptic Adapter, we demonstrate its effectiveness on such applications as video games, internet browsing and cursor operation. Effective tactile feedback would be demonstrated with the prototypes and the application samples during the poster session. The tactile feedback is used to guide the finger operation on the touch panel so that the finger operation is confirmed with the tactile sense and the input-error is reduced through the confirmation. It is also used to give realistic tactile feeling while playing games on the touch panel.