The Department of Justice has instituted new guidelines regarding identification in photo arrays of suspects, making the procedure more scientifically rigorous. Notably, these changes include a “blind” administration—where the person giving the exam doesn’t actually know who the actual suspect is—and recording the identification session.
The new guidelines, which were released last Friday, state:
There are times when such “blind” administration may be impracticable, for example, when all of the officers in an investigating office already know who the suspect is, or when a victim-witness refuses to participate in a photo array unless it is administered by the investigating officer. In such cases, the administrator should adopt “blinded” procedures, so that he or she cannot see the order or arrangement of the photographs viewed by the witness or which photograph( s) the witness is viewing at any particular moment.
These guidelines apply specifically to federal agencies including the FBI and the Drug Enforcement Agency, and not to local law enforcement.
Source: Ars Technica – Technology