A FCR (Friend Code Request) is a system where you can request other peoples friend codes and details for wifi. To add your details go to "My Friend Code" and click edit. Then add you code and town name and your character name and then go to the bottom and click "Submit". Once you have done this you will be able to request other peoples friend codes by either going to their profiles or looking to the left of the persons post and click the blue "Wifi" button, and then submit it and wait for the other persons response. Once they have accepted it, you can view their details by going to "My Friend Codes"