06226619 is referenced by 140 patents and cites 18 patents.

A method and system for preventing counterfeiting of an item, include an interrogatable tag attached to the item. The item includes visible indicia for comparison with secret, non-duplicable information stored in the tag designating authenticity.

Title
Method and system for preventing counterfeiting of high price wholesale and retail items
Application Number
9/182269
Publication Number
6226619 (B1)
Application Date
October 29, 1998
Publication Date
May 1, 2001
Inventor
Robert Jacob von Gutfeld
New York
NY, US
Charles P Tresser
Mamaroneck
NY, US
Alejandro Gabriel Schrott
New York
NY, US
Paul Andrew Moskowitz
Yorktown Heights
NY, US
Arnold Halperin
Cortlandt Manor
NY, US
Agent
McGinn & Gibb P C
US
Agent
Stephen C Kaufman Esq
US
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 17/60
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