?Dr. Hussain is an assistant professor in Mechanical Engineering department at Khalifa University (KU), Abu Dhabi, UAE. He received his PhD degree in robotics from University of Siena, Italy. His research interests include Supernumerary (Extra) Robotic limbs, Medical Robotics, SoftRobotic hands, Complaint Manipulators, Exoskeletons and prosthesis.Prof. Prattichizzo is a professor of robotics at the University of Siena, Siena, Italy, and since 2009 he is a Scientific Consultant at Istituto Italiano di Tecnoloogia, Genova, Italy. In 1994, he was a Visiting Scientist at the MIT AI Lab. He received the Ph.D. degree in robotics and automation from the University of Pisa, Pisa, Italy, in 1995. His research interests are in Supernumerary (Extra) Robotic limbs, haptics, grasping, visual servoing, mobile robotics and geometric control.