MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Dusting fingerprints. Image 1 of 3. Forensic officer using a fine brush to apply fingerprinting dust to a cup. The dust will adhere to the oil of a fingerprint, revealing a distinctive ridged pattern. This can be used to identify the person who held the cup, and link them to this crime scene. Care must be taken to avoid destroying fingerprints, which are easily damaged. The gloves are worn to avoid adding fingerprints. The other protective clothing is worn to avoid contaminating the crime scene. The torch and magnifying glass were used to find fingerprints of usable quality. For a sequence of images showing the recovery of a fingerprint, see H200/184-186.
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