1The questioning of collaborators of justice, infiltrated or undercover persons, protected witnesses and witnesses with hidden identity is conducted under special measures for their protection, which are determined by the court, ex officio or upon the request of parties. When technical means are available, the court may determine that the questioning is conducted at distance, via audio-visual links, pursuant to the rules provided for in paragraph 7 of article 361.
2When the modification of identity of the person to be questioned has been decided, the court shall order appropriate measures to be taken to enable that the voice and face of the person to be unrecognizable by the parties. If the recognition of identity or the examination of the person is indispensable, the court orders the summoning of the person, or his forced accompaniment for the fulfilment of this act. In this case the court orders necessary measures to be taken to avoid the distinct appearance of the face of the person whose identity is modified.
3The court shall not allow that the witness, pursuant to paragraph 1 of this article, is asked questions that may reveal his identity.