Barrier-free walk: A social sharing platform of barrier-free information for sensory/physically-impaired and aged people - Takahiro Miura; Ken-ichiro Yabu; Sakutaro Ikematsu; Asuka Kano; Mari Ueda; Junya Suzuki; Masatsugu Sakajiri; Tohru Ifukube (Proceedings of the IEEE International Conference on Systems, Man, and Cybernetics, SMC 2012, Seoul, Korea (South), October 14-17, 2012, 2012)