The Act Commentary on Sections Part 3 - Criminal evidence, investigations and procedure Section 89: Relevant considerations
473.Subsection (1) requires the court to have regard to the considerations set out in subsection (2) when deciding whether to make an order. The court must also have regard to any other factors it considers relevant.
474.The considerations in subsection (2) are the defendant’s general right to know the identity of a witness, the extent to which credibility of the witness is relevant in assessing the weight of the evidence he or she gives, whether the witness’s evidence might be the sole or decisive evidence, whether the witness’s evidence can be properly tested without knowing the witness’s identity, whether the witness has a tendency or any motive to be dishonest and whether alternative means could be used to protect the witness.