Kiitemoiide TUNE: the system of listening to the conversation at the party. - Yoshiro Sugano; Yusuke Ozawa; Jumpei Ohtsuji; Mariko Koizumi; Shigeyuki Takeuchi; Naohito Okude (SIGGRAPH Posters, 2005)

Shootball: the tangible ball sport in ubiquitous computing. - Yoshiro Sugano; Jumpei Ohtsuji; Toshiya Usui; Yuya Mochizuki; Naohito Okude (Advances in Computer Entertainment Technology, 2006)

Shootball: the ball sport using dynamic goals. - Yoshiro Sugano; Yuya Mochizuki; Toshiya Usui; Naohito Okude (Advances in Computer Entertainment Technology, 2007)