ISSN: 0022-1198
CODEN: JFSCA
Page Count: 9

Laser and Fiber Optic Photographic Analysis of Single-Edge Paper Striations
Cain, S
Document/voice print examiner, U.S. Secret Service, DC

(Received 14 January 1984; accepted 6 March 1984)

Abstract

The Secret Service has recently developed a technique of utilizing time-lapse photography in conjunction with fiber optic and helium-neon light sources in recording the striae appearing along the edges of single counterfeit notes. It appears that thus far, the fiber optic system of photographically recording striae criteria is superior to the laser systems. Future research is designed to improve the resolution of the laser process together with attempting to store and retrieve automatically the striae identifying criteria from appropriate computer hardware.

Keywords:
questioned documents, photography, striations

Paper ID: JFS11777J
DOI: 10.1520/JFS11777J
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