“…Other robots, like Dustcart, are designed for shopping and garbage transportation [8]. On the contrary, other robots are general purpose, in other words, they are not designed to perform specific tasks, but they could provide a range of services, such as DoRo [9], Care-o-Bot®3 [10] , Pepper [11]. Recently, some of these robots become commercially available, like Buddy from Blue Frog robotics [12], Roomba robot [13] devoted to cleaning task, or Pepper from SoftBank [14] used as a commercial promoter in Japan mall.…”