What rights should robots have?

In 1942, Russian science fiction writer Isaac Asimov drew up his'Three Laws of Robotics': 1) A robot may not injure a human being or, through inaction, allow a human being to come to harm; 2) A robot must obey orders given it by human beings except where such orders would conflict with the First Law; 3) A robot must protect its own existence as long as such protection does not conflict with the First or Second Law. For 75 years, these clauses have inspired research and thinking on robot rights. They were even taken up in the first'Ethics Charter for Robots' drawn up by South Korea in 2007. However, today Asimov's laws seem rather simplistic and obsolete as they are centred on humans rather than robots. Nowadays ethics and the rights of machines are starting to go further.