T-mobile: Vibrotactile display pad with spatial and directional information for hand-held device. - Gi-Hun Yang; Moon-sub Jin; Yeonsub Jin; Sungchul Kang (IROS, 2010)

Vibrotactile display for hand-held devices and its preferable pattern generation. - Gi-Hun Yang; Yeonsub Jin; Moon-sub Jin; Sungchul Kang (ICAR, 2011)

Vibrotactile cradle for smart cell-phone providing spatial and directional cues. - Gi-Hun Yang; Yeonsub Jin; Moon-sub Jin; Sungchul Kang (ROBIO, 2011)