Citizens only need to log in to the "e Fuzhou" APP, enter the online opening and downloading page, and open the CTID function, so they can directly identify their ID cards by using the NFC function of their mobile phones. The public can open it after completing the settings according to the prompts. If the phone does not have NFC function, you can also manually enter relevant information to open it. After successful opening, you can select "Scan the QR code of CTID network card" on the number fetching machine to fetch the number.