The Alien Resident Certificate (ARC) serves as your temporary ID card and can prove your resident status in Taiwan. If you will stay over 6 months, please remember to apply for the Alien Resident Certificate and Re-entry Permit at local service centers of the National Immigration Agency. In addition, if you change your residence, you have to register the new address with related documents at a local immigration service station within 15 days. Please check the National Immigration Agency for the latest information.