公开(公告)号：EP1481347A2

公开(公告)日：2004-12-01

申请号：EP03713599.3

申请日：2003-02-19

申请人： Digmarc Corporation

发明人： CARR, J., Scott ,  DAVIS, Bruce, L. ,  DECKER, Stephen, K. ,  HAWES, Jonathan, L. ,  HEIN, William, C., III ,  LEVY, Kenneth, L. ,  MUNDAY, John ,  PERRY, Burt, W.

IPC分类号： G06F17/60

CPC分类号： G07C9/00103 ,  G06Q10/02 ,  G06Q50/265 ,  G07C9/00007 ,  G07C9/00031 ,  G07C2209/41

摘要： Driver's licenses and other security documents include one or more machine-readable features, each conveying plural bits of information. These features are used in a variety of ways to increase security, and/or to enhance functionality. In one embodiment, data encoded on a driver's license is used at airport check-in, to link to a state DMV database and obtain information by which the document, and its custodian, can be authenticated. In like fashion, a license can be used to authenticate a bearer and/or his/her age prior to the sale of alcohol or tobacco products. In other embodiments, different elements of a driver's license (e.g., the substrate, photo, text data, and machine-readable data) are logically bound together (e.g., interlinked through payloads conveyed by different machine-readable features) as a deterrent against counterfeiting. Driver's licenses can be similarly logically bound to personal checks and other documents. Many other arrangements are also disclosed.