1.
Nature
; 436(7050): 475, 2005 Jul 28.
Artigo
em Inglês
| MEDLINE
| ID: mdl-16049465
RESUMO
We have found that almost all paper documents, plastic cards and product packaging contain a unique physical identity code formed from microscopic imperfections in the surface. This covert 'fingerprint' is intrinsic and virtually impossible to modify controllably. It can be rapidly read using a low-cost portable laser scanner. Most forms of document and branded-product fraud could be rendered obsolete by use of this code.