Forensic science. Forensic scientists searching through fingerprint files. This is known as the 'National Fingerprint Gallery', and contains over 4.4 million fingerprint records. Traditional fingerprints are still a major means of linking a suspect with a scene of crime. Modern chemical methods can even 'amplify' the very faint fingerprints which used to be undetectable. Many fingerprint records are now entered on a computer database after their distinctive marks have been coded by experts. Photographed at the Metropolitan Police Support Headquarters in London.
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