点按 新增标签，建立新的标签名称与新增成员，或于新增成员中，将朋友加入已设定的标签内。 [one Zero five] The threat of this attack could be mitigated by enabling Signal's Registration Lock element, a method of two-factor authentication that requires the user to enter a PIN to sign-up the cell phone number on a different machine.[146] Some of the organizers have moved to encrypted https://www.lt-signal.com/