"Someone who frequented the Nexus made them," Adia answers. It doesn't make much sense to her either. Her world is far from a utopia where advanced technology is distributed for free. "She was a philanthropist, I guess."

She doesn't offer Mai to hold it, but she holds it out a little so the girl can get a better look at it. "Do you see the little number buttons here? You enter the coordinates of where you live, and then any time you want to return there, you press this other button. You can enter multiple locations. There was another machine that could tell you the coordinates of your world... I really don't know how that worked at all."