Passport Act Article 28

With regard to the seizure, confiscation, and retention of passports by the Competent Authority or Overseas Mission, as well as passport applications or passport applications submitted by third parties to the Competent Authority or Overseas Mission, the retention period, cancellation, and method of destruction, as well as other relevant matters to be complied, shall be prescribed by the Competent Authority.
中文原文 護照條例第28條
主管機關或駐外館處扣留、沒入、保管之護照,及因申請或由第三人送交主管機關或駐外館處之護照,其保管期限、註銷、銷毀方式及其他應遵行事項之辦法,由主管機關定之。

English translation for reference only; the Chinese text prevails. Not legal advice.