normal arc holders can use egates. Just register at the airport or any NIA. Bring your passport and maybe two photos. They will take your fingerprints and that’s it… you are good to go 
Get your arc updated here
- Taipei City service station at National Immigration Agency
Opening times: 8:00-17:00 - immigration arrival and departure halls at Taipei airport
Opening times: 8:30 -17:00 - immigration arrival and departure halls at Taoyuan airport, Terminal 2.
Opening times: 10:00 -22:00 (Arrival) und 7:00 – 22:00 (Departure) - immigration arrival and departure halls at Kaohsiung airport
Opening times: 8:00 - 17:00 - immigration arrival and departure halls at Kinmen seaport
Opening times: 8:00 - 17:00
How To Use E-gate
- After successful enrollment, you will be able to use E-Gate by placing required ROC (Taiwan) Resident Certificate (IC card) onto the document reader at the entrance of an E-Gate.
- The entrance of the E-Gate is installed with a document reader. You need only place the required IC card or travel document onto the document reader and push it inward to the upper edge to start the reading process.
- When the reading process has finished, you will be able to enter the E-gate to verify your facial image. If you fail facial verification, you can still use your fingerprint to pass verification and clear immigration.