What is the designation for a person conducting a lineup who is unaware of the suspect's identity?

The designation for a person conducting a lineup who is unaware of the suspect's identity is referred to as an independent administrator. This term is used to ensure the integrity of the lineup process and to minimize any potential bias that could occur if the lineup administrator knows who the suspect is. An independent administrator does not have knowledge of the case specifics or the suspect's involvement, which helps in maintaining the reliability of the eyewitness identification. This practice is crucial in the criminal justice system as it helps to reduce the risk of suggestive cues that could lead to misidentification.

In contrast, options like lineup administrator may imply a person responsible for managing the lineup process but without indicating their knowledge of the suspect, while an investigator typically conducts cases and may have knowledge of the suspects. An eyewitness, on the other hand, refers to a person who has witnessed the event in question and is involved in the identification process, but not in conducting the lineup. Therefore, the focus on the independent administrator role highlights the commitment to fair and unbiased identification practices.