What is the trick of Ameca, the robot with irresistible human features

The humanoid robot developed by the British company Engineered Arts, whose movements (and especially whose facial expressions) amazed social media users, was one of the protagonists of the latest Ces, the consumer electronics fair that returned to take place in attendance in Las Vegas. The machine is called Ameca and its creators have explained in more detail how it works and how it manages to be so convincing.