WaistonBelt: a belt for monitoring your real abdominal circumference forever. - Yuki Matsuda 001; Takashi Hasegawa; Keiichiro Iwanami; Naoya Saito; Takuya Ishioka; Ismail Arai; Yutaka Arakawa; Keiichi Yasumoto (UbiComp/ISWC Adjunct, 2015)