Police Lineup (IMAGE) University of Warwick Caption Examples of lineup types. A suspect's distinctive feature can be (a) replicated or concealed either (b) by pixelation or (c) with a block. These are considered fair lineups. Doing nothing about the distinctive feature (d; a do-nothing lineup) constitutes an unfair lineup. The boxed image in each lineup indicates the suspect with the distinctive facial feature. Credit Melissa Colloff Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.