Put off by robots whose looks are close to, but not quite, human? This drop in comfort is known as the "uncanny valley," a feeling people get when exposed to robots that try to mimic humans but instead come across as creepy.
Babyloid, a robot baby designed to keep older people company, has a simplified, smiling face. Red LED lights embedded in its cheeks signify when it is contented.
Actroid models have strong visual human likeness. Developed by Osaka University, these interactive robots can mimic such lifelike functions as blinking, speaking, and breathing!