A sex doll that can talk - but is it perfect Harmony?

Harmony is a new type of sex doll - one that can move and talk. Her head, eyelids and lip movements are fairly crude and her conversation is even more limited. But she is part of a new robotics revolution that is seeing artificial intelligence incorporated into an extremely human-like body. Some think that it will revolutionise the way humans interact with robots while others believe that it represents the very worst in robotic advancement. The uncanny valley - the idea that the closer we get to replicating the human form, the more scared we become of our creations - seems to have come to life in this unassuming factory on the outskirts of San Marcos, California.