"Twin Spin": steering karaoke (or anything else) with smartphone wands deployable as spinnable affordances. - Michael Cohen 002; Rasika Ranaweera; Hayato Ito; Shun Endo; Sascha Holesch; Julián Villegas (ACM SIGMOBILE Mob. Comput. Commun. Rev., 2012)

"Tworlds": twirled worlds for multimodal 'padiddle' spinning & tethered 'poi' whirling. - Michael Cohen 002; Rasika Ranaweera; Kensuke Nishimura; Yuya Sasamoto; Shun Endo; Tomohiro Oyama; Tetsunobu Ohashi; Yukihiro Nishikawa; Ryo Kanno; Anzu Nakada; Julián Villegas; Yong Ping Chen; et al. (SIGGRAPH Posters, 2013)

Twirled affordances, self-conscious avatars, & inspection gestures. - Michael Cohen 002; Rasika Ranaweera; Kensuke Nishimura; Yuya Sasamoto; Tomohiro Oyama; Tetsunobu Ohashi; Anzu Nakada; Julián Villegas; Yong Ping Chen; Sascha Holesch; Jun Yamadera; Hayato Ito; et al. (SIGGRAPH ASIA Mobile Graphics and Interactive Applications, 2013)