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Various systems for hand tool skill training have been developed in the domain of haptic displays. These systems typically present force to a learner's palm by directly actuating the tool. However, this approach is sometimes ineffective because learners have difficulty sensing the haptic feedback from the tool when they are holding it tightly. Thus, we(More)
A physical button that is mounted in a mouse, a keyboard, or a shutter of a camera, provides both force and tactile feedback when a user presses it. It is certainly that users can recognize the press and input through the sensation of "click" vibrations. Many mechanical mechanisms for presenting a click sensation in a physical button have been proposed,(More)
An electrotactile display is a tactile interface that provides tactile perception by passing electrical current through the surface of the skin. It is actively used instead of mechanical tactile displays for tactile feedback because of several advantages such as its small and thin size, light weight, and high responsiveness. However, the similarities and(More)
In most common methods of tactile presentation on touch screen, the tactile display was directly attached or contacted onto the screens. Therefore, the tactile display must be transparent so that it does not obstruct the view of the screen. On the other hand, if the tactile sensation is presented at the back of the device, the tactile display does not need(More)