MADRID - Sporting a trendy brown bob, a humanoid robot named Erica chats to a man in front of stunned audience members in Madrid.
She and others like her are a prime focus of robotic research, as their uncanny human form could be key to integrating such machines into our lives, said researchers gathered this week at the annual International Conference on Intelligent Robots.
A source of controversy due in part to fears for human employment, the presence of robots in our daily lives is nevertheless inevitable, engineers at the conference said.
The trick to making them more palatable, they added, is to make them look and act more human so that we accept them into our lives more easily.
In ageing societies, "robots will coexist with humans sooner or later", said Hiroko Kamide, a Japanese psychologist who specialises in relations between humans and robots.
Welcoming robots into households or workplaces involves developing "multipurpose machines that are capable of interacting" with humans without being dangerous, said Philippe Soueres, head of the robotics department at a laboratory belonging to France's CNRS scientific institute.
As such, robots must move around "in a supple way" despite their rigid mechanics and stop what they are doing in case of any unforeseen event, he added.
That's why people are choosing "modular systems shaped like human bodies" which are meant to easily fit into real-world environments built for humans.
In a sign of fears over the potential future uses for these humanoids, Amnesty International has accused Atlas, financed by an agency of the US Department of Defense, of being a "killer robot" made for future warfare.
Another example of humanoids presented in Madrid is Talos, a robot made by Spanish company Pal Robotics shown testing his stability on a balance board.
While it may not be the only form used for those coming into contact with humans, "it's easier for people to accept the robots when they have human-like faces because people can expect how the robots will move, will react," said Kamide.
That's comforting, but it also has its limits.
In Japan, robots like Erica are already used as receptionists.
But for one of their makers, Hiroshi Ishiguro, a professor at Osaka University, humanoids are above all "a very important tool to understand humans".
Researchers have to think hard about the human form and how humans interact to develop robots that look like them.