Created in the Uchiyama Lab at Japan's University of Tsukuba, Yotaro is meant to be a baby simulator for teaching new parents and about-to-be-older-siblings the ways of babyhood. As crying is obviously a big part of infancy, warm water comes out of a small opening in the interactive screen that doubles as Yotaro's touch-sensitive face.
Yotaro, just a concept for now, is not a standalone robot, as a rather extensive set of devices must be attached for it to perform its baby-like functions.
The computer controlling Yotaro's changing facial expressions is external, the water that serves as the tired-baby tears is stored in a separate tank, and sensors direct Yotaro's "emotional" responses (tickling Yotaro's belly, for example, results in it wiggling its motorized legs under the blanket). A projector under the bed projects the appropriate countenance upward onto Yotaro's 2D face, while a speaker offers up the right baby sounds.
All that hardware kind of makes you long for the old-fashioned mannequin baby, doesn't it?
Thanks to designboom for bringing Yotaro to our attention and to my erai CNET colleague Takayuki Sakurai for translating the Japanese on the University of Tsukuba Web site. Now please excuse us while we go cry some very real adult tears.