An upgraded model of Honda Motor Co.'s walking robot Asimo raises its hand to greet an unidentified Honda employee during a press unveiling at the Japanese automaker's headquarters in Tokyo Wednesday, Dec. 11, 2002. The 1.2 meter (four-foot) tall machine,that already knew how to walk, climb stairs and recognize voices, now also understands human gestures and movement by using the visual information taken by a camera in its head to recognize 10 different preprogrammed faces. (AP/Koji Sasahara)
