Can mechanical buttocks mark a new leap into the future of non-verbal communication of humanoids? Yes, they can and they will, thanks to the Japanese inventor Nobuhiro Takahashi.

SHIRI ("butt" in Japanese) is his creation and can respond with different emotions to different human touches.

But, why he decided to design a bottom? According to Takahashi, bottom's movements are large and make it easier to transmit emotion. However, he plans to apply the proto-type to other...