Amazon.com description: Product Description: This book provides an analysis of the powers and duties of the police in the collection of identification evidence. It is a comprehensive guide to the various sources of identification evidence in the trial process, from disclosure to admissibility and jury directions. It offers a thorough insight into the methodology and admissibility of scientific and other expert means of personal identification. Identification: Investigation, Trial and Scientific Evidence is the only work dealing exclusively with UK identification evidence. This second edition has been extensively revised and rewritten to take on board many new developments in UK law and practice, including: an expanded coverage of the psychology of visual identification * a detailed examination of the bad character and hearsay evidence provisions of the UK's Criminal Justice Act 2003 and subsequent case law * developments in police identification using closed-circuit television * increased police powers to take fingerprints and intimate samples * and scientific developments in the use of DNA and facial mapping.