"A low-cost laser scanning system could help in the fight against document and ID fraud, according to its developers at Imperial College London," reports BBC News.
" The Laser Surface Authentication (LSA) system scans tiny surface variations of paper, plastic, metal and ceramics to detect the material's 'fingerprint'. The system then records the naturally occurring pattern of imperfections. The imperfections are so minute, say the scientists, that they are virtually impossible to replicate."
Thanks to Ken Young for the link....
