Witness Protection Act Article 11

Except otherwise provided in the law, the true name and identification information of the witness who is necessary to be protected should be used a code name by making a record or documentfrom the public official. Any information of the protected witness such as the year of birth, address of the residence, identification number or passport number and other information that is capable of identifying the protected witness should not be recordedon the record or document. The signature of the protected witness should be substituted by the thumbprint of the protected witness.The record or the original document that contains the true name or identification information of the protected witness should be stored and sealed in an envelope. Other documents that are capable of revealing the identity of the protected witness should alsobe stored and sealed in an envelope.Excepted otherwise provided in the law, any record or document that is stored and sealed in the envelope should not be examined or make available to any agency, group or individual other than the agency in charge of the criminal investigation or trial.A witness who is protected under this Act may conceal his or her identity by wearing a mask, changing his or her voice, appearance, using video communication or other forms of segregation during the investigation or trial. The same methods should be taken toa witness protected under this Act during the confrontation or examination under the law.
中文原文 證人保護法第11條
有保密身分必要之證人,除法律另有規定者外,其真實姓名及身分資料,公務員於製作筆錄或文書時,應以代號為之,不得記載證人之年籍、住居所、身分證統一編號或護照號碼及其他足資識別其身分之資料。
該證人之簽名以按指印代之。
載有保密證人真實身分資料之筆錄或文書原本,應另行製作卷面封存之。
其他文書足以顯示應保密證人之身分者,亦同。
前項封存之筆錄、文書,除法律另有規定者外,不得供閱覽或提供偵查、審判機關以外之其他機關、團體或個人。
對依本法有保密身分必要之證人,於偵查或審理中為訊問時,應以蒙面、變聲、變像、視訊傳送或其他適當隔離方式為之。
於其依法接受對質或詰問時,亦同。

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