Recognizing Document's Originality by laser Surface Authentication
Wiwi Samsul, Henri P. Uranus, Muhammad Danang Birowosuto · 2010
This article reports the usage of laser speckle to identify papers by making use of unique microstructure of each part of the papers. The experiments were carried out by shooting a beam of laser onto the surface of the papers. The microscopic patterns of speckles were captured using CCD Camera and the images were digitally processed to perform paper authentication.