For years there has been a trend to add social features to service robots, such as delivery, security and cleaning robots, and also to industrial robots, resulting in cobots. They do not usually become fully social robots, but they benefit from having eyes and mouths or making sounds – or from being able to get very close to people without hurting or hindering them. Amazon is riding this wave with its Proteus transport robot. It can be found in a huge department store in Reading, Massachusetts. A Wired editor writes about his first encounter with two Proteus models: „Their round eyes and satisfied grins are rendered with light emitting diodes. They sport small lidar sensors like tiny hats that scan nearby objects and people in 3D. Suddenly, one of them plays a chipper little tune, its mouth starts flashing, and its eyes morph into heart shapes. This means, I am told, that the robot is happy.“ (Wired, 26 June 2023) „Why would a robot be happy?“, asks the editor Sophie Li, a software engineer at Amazon. She explains that being able to express happiness can help Proteus work more effectively around people. „Proteus carries suitcase-sized plastic bins filled with packages over to trucks in a loading bay that is also staffed by humans. The robot is smart enough to distinguish people from inanimate objects and make its own decisions about how to navigate around a box or person in its path. But sometimes it needs to tell someone to move out of the way – or that it is stuck, which it does by showing different colors with its mouth. Li recently added the heart eyes to let Proteus also signal when it has completed a task as planned.“ (Wired, 26 June 2023) The market for real social robots is still in its infancy. Care and therapy robots, entertainment and toy robots, or sex robots – there is a constant up and down, with companies emerging and disappearing, products appearing and disappearing. It is uncertain whether all social robots will be needed. What is certain is that social features will help to improve modern industrial robots and classic service robots.

Fig.: The transport robot Plato