SPENCER GRANT / SCIENCE PHOTO LIBRARY SPENCER GRANT / SCIENCE PHOTO LIBRARY
Screen shot of a digital fingerprint at the Santa Ana, CA police department. Fingerprints are left when amino acids, oils, or substances like paint or blood are transfered to a surface and can be visualized using aluminum powders. Identification requires the recognition of patterns. The four main types are arch, tented arch, whorl, and loops.
Model release not required. Property release not required.