We are exploring mechanisms to transmit the information of force and tactile sensation to human by a mobile vibration gadget. By investigating dynamic transmission characteristics of an asymmetric vibration to the skin, we have newly formalized an efficient principle for designing a mobile force display device. Owing to this principle, Buru-Navi, mobile force display gadget, now can take various forms, such as a smartphone shell type and cubic shaped controller both of which can induce directional force sensation in multi degree-of-freedom.
The cubic controller is attractive to realize a VR navigation by force display in six degree-of-freedom, and the smartphone shell type enables us to navigate pedestrian with a sensation of being pulled with hand. We will showcase some examples of possible application for navigation.

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