When a local passcode is set, a lock icon appears at the top of your chats list. Click it to lock Telegram Desktop.
Note: if you forget your local passcode, you'll need to log out of Telegram Desktop and log in again.
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當您設定了安全鎖，聊天列表將顯示一個安全鎖的按鈕。點此鎖定或解鎖。
注意：如果您忘記了密碼，您將需要刪除並重新安裝應用程式，所有的秘密聊天紀錄都將會消失。
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初音 ミク,
Jan 2, 2019 at 13:18