Offender comparison

A special forensic instrument used to identify the perpetrator is called a perpetrator comparison or perpetrator comparison.

Several suspects are placed side by side in this process. The victim or a witness to the crime selects the alleged perpetrator from among these suspects through a mostly mirrored window or directly .

This procedure makes it easy to rule out other suspects. A special application of this procedure is to allow the witness to choose the perpetrator he has already identified separately in a perpetrator comparison with other "false" suspects in order to give his testimony more power and to rule out a false suspicion.