"Navigating an airport is challenging, there is a lot of glass and a constantly changing environment in terms of temporary obstructions, such as parked luggage trolleys and people everywhere," Achim Lilienthal, project leader at Örebro University which contributed to the research, said in a statement. "Objects that are temporarily permanent so to speak, are the most difficult to work around. We do not know, for instance, how long that luggage trolley will be parked in a particular spot, which makes it harder for the robot to determine its own location. We are working on a general map representation that includes and allows the robot to handle temporarily permanent objects."

Read the full article at its source: http://www.engadget.com/2015/11/26/spencer-the-robot-is-here-to-help-guide-lost-airline-passenger/