According to the authors, a suspect's refusal to appear in a lineup for identification purposes can be remedied by

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Using a pictorial identification is a viable alternative to a lineup and does not require the suspect's physical presence. It involves showing the witness a set of photographs, which may include a photograph of the suspect, and asking the witness to identify the perpetrator. This can be done without the suspect's cooperation or approval.

According to the Authors, a Suspect's Refusal to Appear in a Lineup