Real-World Oriented Communication Platform "LocationCall". - Shinpei Chihara; Masanori Nakano; Kazuhiro Sakata; Ken'ichi Ishii; Akihisa Kurashima (WCNC, 2008)

iNkDraw: physical ink-based interface for capturing and manipulating drawings on digital display. - Kayato Sekiya; Shinpei Chihara (TEI, 2011)