• (1) 請先安裝「HiCOS卡片管理工具」或「 MAC版元件」，並重新啟動您的瀏覽器
Please install「Windows plugin」or「 MAC plugin」first. And reboot your browser.
• (2) 將IC卡插入讀卡機後，按選擇卡片欄位的”▼”，選擇讀卡機後，將讀取卡片資訊，敬請核對。
Insert your IC card into the card reader. And select the corresponding IC card via ”▼” icon. The system will automatically shows the information of your IC card.
• (3) 請輸入舊的PIN碼(若PIN預設值為出生，例如：60年1月1日(國曆年)，輸入舊的PIN碼即為600101)。及輸入新的PIN碼二次(為增加安全性，建議PIN碼輸入以六至八碼的數字加英文字組合，且不為空白)。
Enter the original PIN code (if your PIN code was set using your birthday, for instance, 1 January 60 (Chinese calendar year), your original PIN code should be 600101). And enter your new PIN code twice (to enhance security, you are recommended to use a combination of numbers and English letters ranging from six to eight characters and no spaces).
• (4) 完成修改PIN碼作業。
Completing Operation for Change of PIN Code.

※在MOICA網站上執行各種認證操作時，如果出現"網頁錯誤"或按下操作按鈕無反應，請先下載並安裝「HiCOS Client」。
步驟說明如下：
※Download and install the「HiCOS Client」if "Web Page Errors" appears or no response when pressing the operation button, while enforcing the various certification operations on the MOICA website.
Steps are described as follows:

• (a) 安裝Hicos Card Management Tool：請先按下載鏈接「HiCOS Client」解壓執行文件安裝Hicos Card Management Tool。
Installing the Hicos Card Management Tool: Please press the download hyperlink「HiCOS Client」and decompress the execution file to install HiCOS Card Management Tool.
• (b) 安裝完成後請重啟電腦，按開始/程序/HICOS PKI Smart Card/HiCOS Card Management Tool/Card Management/Change PIN Code，按照提示修改您的PIN碼。
Please reboot your computer after the installation and press Start / Programs / HICOS PKI Smart Card / HiCOS Card Management Tool / Card Management / Change PIN Code，do as the instructions to change tour PIN code.