Robots may not be able to do everything humans can, but <A HREF="http://news.zdnet.com/2100-9584_22-5998046.html?tag=zdnn.alert">the latest version of Sony's humanoid robot</A> has something many people might find useful: a third eye. The Japanese consumer electronics company's roller-skating robot, Qrio, has now been enlightened with an extra camera eye on its forehead that allows it to see several people at once and focus in on one of them. At an exhibit on intelligent machines in the glitzy shopping district of Ginza on Friday, Sony unveiled the new and improved Qrio, which walked jauntily toward the audience, swinging its hips to music.