The Taipei Main Station Navigator App invites the public to search for the mascot dog Dou-Dou. By using GPS, participants can scan the floor in the lobby of Taipei Railway Station, the food area on the second floor, the entrance of the MRT, etc., and Festival Dou-Dou as well as Mask Dou-Dou will definitely show up! Tap on Dou-Dou when you find him, and he will bite a golden coin, indicating that you’ve successfully completed the mission.